Home / 819,101.04-1,130,416.20-496,824.72

Finding the Fourth Proportional to 819,101.04, 1,130,416.20 and 496,824.72

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Solution

The fourth proportional to 819,101.04, 1,130,416.20 and 496,824.72 is: 685,652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,101.04 : 1,130,416.20 = 496,824.72 : x
  2. Step 2: Convert to fraction form
    819,101.04/1,130,416.20 = 496,824.72/x
  3. Step 3: Cross multiply
    819,101.04x = 1,130,416.20 × 496,824.72
  4. Step 4: Simplify right side
    819,101.04x = 561,618,712,048.46
  5. Step 5: Solve for x
    x = 561,618,712,048.46/819,101.04
  6. Step 6: Final answer
    x = 685,652.54

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Half scale
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Double scale
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Similar ratio
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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.