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Finding the Fourth Proportional to 543,123.20, 814,684.80 and 508,131.20

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Solution

The fourth proportional to 543,123.20, 814,684.80 and 508,131.20 is: 762,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,123.20 : 814,684.80 = 508,131.20 : x
  2. Step 2: Convert to fraction form
    543,123.20/814,684.80 = 508,131.20/x
  3. Step 3: Cross multiply
    543,123.20x = 814,684.80 × 508,131.20
  4. Step 4: Simplify right side
    543,123.20x = 413,966,765,045.76
  5. Step 5: Solve for x
    x = 413,966,765,045.76/543,123.20
  6. Step 6: Final answer
    x = 762,196.80

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Double scale
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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.