Home / 728,472.04-1,092,445.62-307,780.72

Finding the Fourth Proportional to 728,472.04, 1,092,445.62 and 307,780.72

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Solution

The fourth proportional to 728,472.04, 1,092,445.62 and 307,780.72 is: 461,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,472.04 : 1,092,445.62 = 307,780.72 : x
  2. Step 2: Convert to fraction form
    728,472.04/1,092,445.62 = 307,780.72/x
  3. Step 3: Cross multiply
    728,472.04x = 1,092,445.62 × 307,780.72
  4. Step 4: Simplify right side
    728,472.04x = 336,233,699,484.45
  5. Step 5: Solve for x
    x = 336,233,699,484.45/728,472.04
  6. Step 6: Final answer
    x = 461,560.20

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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.