Home / 728,099.40-1,092,149.10-307,849.80

Finding the Fourth Proportional to 728,099.40, 1,092,149.10 and 307,849.80

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Solution

The fourth proportional to 728,099.40, 1,092,149.10 and 307,849.80 is: 461,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,099.40 : 1,092,149.10 = 307,849.80 : x
  2. Step 2: Convert to fraction form
    728,099.40/1,092,149.10 = 307,849.80/x
  3. Step 3: Cross multiply
    728,099.40x = 1,092,149.10 × 307,849.80
  4. Step 4: Simplify right side
    728,099.40x = 336,217,882,005.18
  5. Step 5: Solve for x
    x = 336,217,882,005.18/728,099.40
  6. Step 6: Final answer
    x = 461,774.70

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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.