Home / 749,007.20-1,123,510.80-329,103.20

Finding the Fourth Proportional to 749,007.20, 1,123,510.80 and 329,103.20

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Solution

The fourth proportional to 749,007.20, 1,123,510.80 and 329,103.20 is: 493,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,007.20 : 1,123,510.80 = 329,103.20 : x
  2. Step 2: Convert to fraction form
    749,007.20/1,123,510.80 = 329,103.20/x
  3. Step 3: Cross multiply
    749,007.20x = 1,123,510.80 × 329,103.20
  4. Step 4: Simplify right side
    749,007.20x = 369,750,999,514.56
  5. Step 5: Solve for x
    x = 369,750,999,514.56/749,007.20
  6. Step 6: Final answer
    x = 493,654.80

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Double scale
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Similar ratio
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1.5x scale

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.