Home / 347,269,486,085.36-479,244,824,215.04-208,243,402,622.76

Finding the Fourth Proportional to 347,269,486,085.36, 479,244,824,215.04 and 208,243,402,622.76

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Solution

The fourth proportional to 347,269,486,085.36, 479,244,824,215.04 and 208,243,402,622.76 is: 287,383,651,264.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,269,486,085.36 : 479,244,824,215.04 = 208,243,402,622.76 : x
  2. Step 2: Convert to fraction form
    347,269,486,085.36/479,244,824,215.04 = 208,243,402,622.76/x
  3. Step 3: Cross multiply
    347,269,486,085.36x = 479,244,824,215.04 × 208,243,402,622.76
  4. Step 4: Simplify right side
    347,269,486,085.36x = 99,799,572,883,886,410,039,296
  5. Step 5: Solve for x
    x = 99,799,572,883,886,410,039,296/347,269,486,085.36
  6. Step 6: Final answer
    x = 287,383,651,264.30

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Half scale
Find fourth proportional to 694,538,972,170.72, 958,489,648,430.08 and 416,486,805,245.52
Double scale
Find fourth proportional to 347,269,486,086.36, 479,244,824,216.42 and 208,243,402,623.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.