Home / 738,545.78-1,019,193.90-399,014.30

Finding the Fourth Proportional to 738,545.78, 1,019,193.90 and 399,014.30

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Solution

The fourth proportional to 738,545.78, 1,019,193.90 and 399,014.30 is: 550,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,545.78 : 1,019,193.90 = 399,014.30 : x
  2. Step 2: Convert to fraction form
    738,545.78/1,019,193.90 = 399,014.30/x
  3. Step 3: Cross multiply
    738,545.78x = 1,019,193.90 × 399,014.30
  4. Step 4: Simplify right side
    738,545.78x = 406,672,940,572.77
  5. Step 5: Solve for x
    x = 406,672,940,572.77/738,545.78
  6. Step 6: Final answer
    x = 550,640.12

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.