Home / 728,132.90-1,092,357.19-278,853.84

Finding the Fourth Proportional to 728,132.90, 1,092,357.19 and 278,853.84

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Solution

The fourth proportional to 728,132.90, 1,092,357.19 and 278,853.84 is: 418,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,132.90 : 1,092,357.19 = 278,853.84 : x
  2. Step 2: Convert to fraction form
    728,132.90/1,092,357.19 = 278,853.84/x
  3. Step 3: Cross multiply
    728,132.90x = 1,092,357.19 × 278,853.84
  4. Step 4: Simplify right side
    728,132.90x = 304,607,997,431.68
  5. Step 5: Solve for x
    x = 304,607,997,431.68/728,132.90
  6. Step 6: Final answer
    x = 418,341.21

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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.