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Finding the Fourth Proportional to 721,888.20, 996,229.23 and 415,940.87

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Solution

The fourth proportional to 721,888.20, 996,229.23 and 415,940.87 is: 574,011.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,888.20 : 996,229.23 = 415,940.87 : x
  2. Step 2: Convert to fraction form
    721,888.20/996,229.23 = 415,940.87/x
  3. Step 3: Cross multiply
    721,888.20x = 996,229.23 × 415,940.87
  4. Step 4: Simplify right side
    721,888.20x = 414,372,453,576.43
  5. Step 5: Solve for x
    x = 414,372,453,576.43/721,888.20
  6. Step 6: Final answer
    x = 574,011.95

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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.