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Finding the Fourth Proportional to 545,712.63, 819,127.52 and 450,639.89

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Solution

The fourth proportional to 545,712.63, 819,127.52 and 450,639.89 is: 676,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,712.63 : 819,127.52 = 450,639.89 : x
  2. Step 2: Convert to fraction form
    545,712.63/819,127.52 = 450,639.89/x
  3. Step 3: Cross multiply
    545,712.63x = 819,127.52 × 450,639.89
  4. Step 4: Simplify right side
    545,712.63x = 369,131,535,508.77
  5. Step 5: Solve for x
    x = 369,131,535,508.77/545,712.63
  6. Step 6: Final answer
    x = 676,421.10

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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.