Home / 749,140.70-1,123,711.05-497,198.30

Finding the Fourth Proportional to 749,140.70, 1,123,711.05 and 497,198.30

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Solution

The fourth proportional to 749,140.70, 1,123,711.05 and 497,198.30 is: 745,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,140.70 : 1,123,711.05 = 497,198.30 : x
  2. Step 2: Convert to fraction form
    749,140.70/1,123,711.05 = 497,198.30/x
  3. Step 3: Cross multiply
    749,140.70x = 1,123,711.05 × 497,198.30
  4. Step 4: Simplify right side
    749,140.70x = 558,707,223,751.22
  5. Step 5: Solve for x
    x = 558,707,223,751.22/749,140.70
  6. Step 6: Final answer
    x = 745,797.45

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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.