Home / 728,528.80-1,092,731.76-411,989.92

Finding the Fourth Proportional to 728,528.80, 1,092,731.76 and 411,989.92

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Solution

The fourth proportional to 728,528.80, 1,092,731.76 and 411,989.92 is: 617,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,528.80 : 1,092,731.76 = 411,989.92 : x
  2. Step 2: Convert to fraction form
    728,528.80/1,092,731.76 = 411,989.92/x
  3. Step 3: Cross multiply
    728,528.80x = 1,092,731.76 × 411,989.92
  4. Step 4: Simplify right side
    728,528.80x = 450,194,470,383.86
  5. Step 5: Solve for x
    x = 450,194,470,383.86/728,528.80
  6. Step 6: Final answer
    x = 617,950.14

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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.