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Finding the Fourth Proportional to 543,134.80, 813,827.40 and 453,905.20

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Solution

The fourth proportional to 543,134.80, 813,827.40 and 453,905.20 is: 680,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,134.80 : 813,827.40 = 453,905.20 : x
  2. Step 2: Convert to fraction form
    543,134.80/813,827.40 = 453,905.20/x
  3. Step 3: Cross multiply
    543,134.80x = 813,827.40 × 453,905.20
  4. Step 4: Simplify right side
    543,134.80x = 369,400,488,762.48
  5. Step 5: Solve for x
    x = 369,400,488,762.48/543,134.80
  6. Step 6: Final answer
    x = 680,126.72

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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.