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Finding the Fourth Proportional to 888,129.30, 1,330,663.05 and 413,841.90

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Solution

The fourth proportional to 888,129.30, 1,330,663.05 and 413,841.90 is: 620,049.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,129.30 : 1,330,663.05 = 413,841.90 : x
  2. Step 2: Convert to fraction form
    888,129.30/1,330,663.05 = 413,841.90/x
  3. Step 3: Cross multiply
    888,129.30x = 1,330,663.05 × 413,841.90
  4. Step 4: Simplify right side
    888,129.30x = 550,684,124,871.80
  5. Step 5: Solve for x
    x = 550,684,124,871.80/888,129.30
  6. Step 6: Final answer
    x = 620,049.50

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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.