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Finding the Fourth Proportional to 415,516.10, 623,274.15 and 344,657.30

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Solution

The fourth proportional to 415,516.10, 623,274.15 and 344,657.30 is: 516,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,516.10 : 623,274.15 = 344,657.30 : x
  2. Step 2: Convert to fraction form
    415,516.10/623,274.15 = 344,657.30/x
  3. Step 3: Cross multiply
    415,516.10x = 623,274.15 × 344,657.30
  4. Step 4: Simplify right side
    415,516.10x = 214,815,985,698.80
  5. Step 5: Solve for x
    x = 214,815,985,698.80/415,516.10
  6. Step 6: Final answer
    x = 516,985.95

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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.