Home / 728,358.68-1,092,499.12-279,294.68

Finding the Fourth Proportional to 728,358.68, 1,092,499.12 and 279,294.68

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Solution

The fourth proportional to 728,358.68, 1,092,499.12 and 279,294.68 is: 418,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,358.68 : 1,092,499.12 = 279,294.68 : x
  2. Step 2: Convert to fraction form
    728,358.68/1,092,499.12 = 279,294.68/x
  3. Step 3: Cross multiply
    728,358.68x = 1,092,499.12 × 279,294.68
  4. Step 4: Simplify right side
    728,358.68x = 305,129,192,120.68
  5. Step 5: Solve for x
    x = 305,129,192,120.68/728,358.68
  6. Step 6: Final answer
    x = 418,927.10

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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.