Home / 509,025.60-763,538.40-458,287.20

Finding the Fourth Proportional to 509,025.60, 763,538.40 and 458,287.20

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Solution

The fourth proportional to 509,025.60, 763,538.40 and 458,287.20 is: 687,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,025.60 : 763,538.40 = 458,287.20 : x
  2. Step 2: Convert to fraction form
    509,025.60/763,538.40 = 458,287.20/x
  3. Step 3: Cross multiply
    509,025.60x = 763,538.40 × 458,287.20
  4. Step 4: Simplify right side
    509,025.60x = 349,919,875,428.48
  5. Step 5: Solve for x
    x = 349,919,875,428.48/509,025.60
  6. Step 6: Final answer
    x = 687,430.80

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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.