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Finding the Fourth Proportional to 503,575.70, 755,363.55 and 389,414.30

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Solution

The fourth proportional to 503,575.70, 755,363.55 and 389,414.30 is: 584,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,575.70 : 755,363.55 = 389,414.30 : x
  2. Step 2: Convert to fraction form
    503,575.70/755,363.55 = 389,414.30/x
  3. Step 3: Cross multiply
    503,575.70x = 755,363.55 × 389,414.30
  4. Step 4: Simplify right side
    503,575.70x = 294,149,368,068.77
  5. Step 5: Solve for x
    x = 294,149,368,068.77/503,575.70
  6. Step 6: Final answer
    x = 584,121.45

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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.