Home / 728,428.30-1,092,642.45-413,500.30

Finding the Fourth Proportional to 728,428.30, 1,092,642.45 and 413,500.30

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Solution

The fourth proportional to 728,428.30, 1,092,642.45 and 413,500.30 is: 620,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,428.30 : 1,092,642.45 = 413,500.30 : x
  2. Step 2: Convert to fraction form
    728,428.30/1,092,642.45 = 413,500.30/x
  3. Step 3: Cross multiply
    728,428.30x = 1,092,642.45 × 413,500.30
  4. Step 4: Simplify right side
    728,428.30x = 451,807,980,867.74
  5. Step 5: Solve for x
    x = 451,807,980,867.74/728,428.30
  6. Step 6: Final answer
    x = 620,250.45

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