Home / 739,139.40-1,108,709.10-499,990.95

Finding the Fourth Proportional to 739,139.40, 1,108,709.10 and 499,990.95

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Solution

The fourth proportional to 739,139.40, 1,108,709.10 and 499,990.95 is: 749,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,139.40 : 1,108,709.10 = 499,990.95 : x
  2. Step 2: Convert to fraction form
    739,139.40/1,108,709.10 = 499,990.95/x
  3. Step 3: Cross multiply
    739,139.40x = 1,108,709.10 × 499,990.95
  4. Step 4: Simplify right side
    739,139.40x = 554,344,516,182.65
  5. Step 5: Solve for x
    x = 554,344,516,182.65/739,139.40
  6. Step 6: Final answer
    x = 749,986.43

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Half scale
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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.