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Finding the Fourth Proportional to 658,366.80, 987,550.20 and 552,078.60

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Solution

The fourth proportional to 658,366.80, 987,550.20 and 552,078.60 is: 828,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,366.80 : 987,550.20 = 552,078.60 : x
  2. Step 2: Convert to fraction form
    658,366.80/987,550.20 = 552,078.60/x
  3. Step 3: Cross multiply
    658,366.80x = 987,550.20 × 552,078.60
  4. Step 4: Simplify right side
    658,366.80x = 545,205,331,845.72
  5. Step 5: Solve for x
    x = 545,205,331,845.72/658,366.80
  6. Step 6: Final answer
    x = 828,117.90

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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.