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Finding the Fourth Proportional to 510,515.40, 765,773.10 and 342,553.80

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Solution

The fourth proportional to 510,515.40, 765,773.10 and 342,553.80 is: 513,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,515.40 : 765,773.10 = 342,553.80 : x
  2. Step 2: Convert to fraction form
    510,515.40/765,773.10 = 342,553.80/x
  3. Step 3: Cross multiply
    510,515.40x = 765,773.10 × 342,553.80
  4. Step 4: Simplify right side
    510,515.40x = 262,318,485,342.78
  5. Step 5: Solve for x
    x = 262,318,485,342.78/510,515.40
  6. Step 6: Final answer
    x = 513,830.70

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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.