Home / 728,165.40-1,092,248.10-490,219.80

Finding the Fourth Proportional to 728,165.40, 1,092,248.10 and 490,219.80

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Solution

The fourth proportional to 728,165.40, 1,092,248.10 and 490,219.80 is: 735,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,165.40 : 1,092,248.10 = 490,219.80 : x
  2. Step 2: Convert to fraction form
    728,165.40/1,092,248.10 = 490,219.80/x
  3. Step 3: Cross multiply
    728,165.40x = 1,092,248.10 × 490,219.80
  4. Step 4: Simplify right side
    728,165.40x = 535,441,645,132.38
  5. Step 5: Solve for x
    x = 535,441,645,132.38/728,165.40
  6. Step 6: Final answer
    x = 735,329.70

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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.