Home / 728,406.54-1,092,924.70-391,053.29

Finding the Fourth Proportional to 728,406.54, 1,092,924.70 and 391,053.29

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Solution

The fourth proportional to 728,406.54, 1,092,924.70 and 391,053.29 is: 586,748.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,406.54 : 1,092,924.70 = 391,053.29 : x
  2. Step 2: Convert to fraction form
    728,406.54/1,092,924.70 = 391,053.29/x
  3. Step 3: Cross multiply
    728,406.54x = 1,092,924.70 × 391,053.29
  4. Step 4: Simplify right side
    728,406.54x = 427,391,793,215.01
  5. Step 5: Solve for x
    x = 427,391,793,215.01/728,406.54
  6. Step 6: Final answer
    x = 586,748.98

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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.