Home / 749,007.80-1,123,511.70-329,103.80

Finding the Fourth Proportional to 749,007.80, 1,123,511.70 and 329,103.80

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Solution

The fourth proportional to 749,007.80, 1,123,511.70 and 329,103.80 is: 493,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,007.80 : 1,123,511.70 = 329,103.80 : x
  2. Step 2: Convert to fraction form
    749,007.80/1,123,511.70 = 329,103.80/x
  3. Step 3: Cross multiply
    749,007.80x = 1,123,511.70 × 329,103.80
  4. Step 4: Simplify right side
    749,007.80x = 369,751,969,814.46
  5. Step 5: Solve for x
    x = 369,751,969,814.46/749,007.80
  6. Step 6: Final answer
    x = 493,655.70

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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.