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Finding the Fourth Proportional to 545,711.13, 819,125.27 and 450,638.39

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Solution

The fourth proportional to 545,711.13, 819,125.27 and 450,638.39 is: 676,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,711.13 : 819,125.27 = 450,638.39 : x
  2. Step 2: Convert to fraction form
    545,711.13/819,125.27 = 450,638.39/x
  3. Step 3: Cross multiply
    545,711.13x = 819,125.27 × 450,638.39
  4. Step 4: Simplify right side
    545,711.13x = 369,129,292,881.12
  5. Step 5: Solve for x
    x = 369,129,292,881.12/545,711.13
  6. Step 6: Final answer
    x = 676,418.85

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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.