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Finding the Fourth Proportional to 538,147.20, 807,220.80 and 512,342.40

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Solution

The fourth proportional to 538,147.20, 807,220.80 and 512,342.40 is: 768,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,147.20 : 807,220.80 = 512,342.40 : x
  2. Step 2: Convert to fraction form
    538,147.20/807,220.80 = 512,342.40/x
  3. Step 3: Cross multiply
    538,147.20x = 807,220.80 × 512,342.40
  4. Step 4: Simplify right side
    538,147.20x = 413,573,442,001.92
  5. Step 5: Solve for x
    x = 413,573,442,001.92/538,147.20
  6. Step 6: Final answer
    x = 768,513.60

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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.