Home / 728,582.25-1,092,964.92-391,159.11

Finding the Fourth Proportional to 728,582.25, 1,092,964.92 and 391,159.11

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Solution

The fourth proportional to 728,582.25, 1,092,964.92 and 391,159.11 is: 586,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,582.25 : 1,092,964.92 = 391,159.11 : x
  2. Step 2: Convert to fraction form
    728,582.25/1,092,964.92 = 391,159.11/x
  3. Step 3: Cross multiply
    728,582.25x = 1,092,964.92 × 391,159.11
  4. Step 4: Simplify right side
    728,582.25x = 427,523,179,903.60
  5. Step 5: Solve for x
    x = 427,523,179,903.60/728,582.25
  6. Step 6: Final answer
    x = 586,787.81

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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.