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Finding the Fourth Proportional to 545,713.61, 819,129.02 and 450,640.89

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Solution

The fourth proportional to 545,713.61, 819,129.02 and 450,640.89 is: 676,422.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,713.61 : 819,129.02 = 450,640.89 : x
  2. Step 2: Convert to fraction form
    545,713.61/819,129.02 = 450,640.89/x
  3. Step 3: Cross multiply
    545,713.61x = 819,129.02 × 450,640.89
  4. Step 4: Simplify right side
    545,713.61x = 369,133,028,344.42
  5. Step 5: Solve for x
    x = 369,133,028,344.42/545,713.61
  6. Step 6: Final answer
    x = 676,422.62

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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.