Home / 1,220,548,085.76-1,684,344,481.20-663,631,131.36

Finding the Fourth Proportional to 1,220,548,085.76, 1,684,344,481.20 and 663,631,131.36

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Solution

The fourth proportional to 1,220,548,085.76, 1,684,344,481.20 and 663,631,131.36 is: 915,804,503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,548,085.76 : 1,684,344,481.20 = 663,631,131.36 : x
  2. Step 2: Convert to fraction form
    1,220,548,085.76/1,684,344,481.20 = 663,631,131.36/x
  3. Step 3: Cross multiply
    1,220,548,085.76x = 1,684,344,481.20 × 663,631,131.36
  4. Step 4: Simplify right side
    1,220,548,085.76x = 1,117,783,433,658,728,320
  5. Step 5: Solve for x
    x = 1,117,783,433,658,728,320/1,220,548,085.76
  6. Step 6: Final answer
    x = 915,804,503.48

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Double scale
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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.