Home / 458,314.20-687,471.30-432,070.20

Finding the Fourth Proportional to 458,314.20, 687,471.30 and 432,070.20

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Solution

The fourth proportional to 458,314.20, 687,471.30 and 432,070.20 is: 648,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,314.20 : 687,471.30 = 432,070.20 : x
  2. Step 2: Convert to fraction form
    458,314.20/687,471.30 = 432,070.20/x
  3. Step 3: Cross multiply
    458,314.20x = 687,471.30 × 432,070.20
  4. Step 4: Simplify right side
    458,314.20x = 297,035,862,085.26
  5. Step 5: Solve for x
    x = 297,035,862,085.26/458,314.20
  6. Step 6: Final answer
    x = 648,105.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.