Home / 728,470.90-1,092,083.28-279,513.94

Finding the Fourth Proportional to 728,470.90, 1,092,083.28 and 279,513.94

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Solution

The fourth proportional to 728,470.90, 1,092,083.28 and 279,513.94 is: 419,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,470.90 : 1,092,083.28 = 279,513.94 : x
  2. Step 2: Convert to fraction form
    728,470.90/1,092,083.28 = 279,513.94/x
  3. Step 3: Cross multiply
    728,470.90x = 1,092,083.28 × 279,513.94
  4. Step 4: Simplify right side
    728,470.90x = 305,252,500,400.92
  5. Step 5: Solve for x
    x = 305,252,500,400.92/728,470.90
  6. Step 6: Final answer
    x = 419,031.84

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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.