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Finding the Fourth Proportional to 580,266.90, 870,400.35 and 381,201.30

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Solution

The fourth proportional to 580,266.90, 870,400.35 and 381,201.30 is: 571,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,266.90 : 870,400.35 = 381,201.30 : x
  2. Step 2: Convert to fraction form
    580,266.90/870,400.35 = 381,201.30/x
  3. Step 3: Cross multiply
    580,266.90x = 870,400.35 × 381,201.30
  4. Step 4: Simplify right side
    580,266.90x = 331,797,744,940.46
  5. Step 5: Solve for x
    x = 331,797,744,940.46/580,266.90
  6. Step 6: Final answer
    x = 571,801.95

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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.