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Finding the Fourth Proportional to 658,290.80, 987,436.20 and 552,002.60

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Solution

The fourth proportional to 658,290.80, 987,436.20 and 552,002.60 is: 828,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,290.80 : 987,436.20 = 552,002.60 : x
  2. Step 2: Convert to fraction form
    658,290.80/987,436.20 = 552,002.60/x
  3. Step 3: Cross multiply
    658,290.80x = 987,436.20 × 552,002.60
  4. Step 4: Simplify right side
    658,290.80x = 545,067,349,734.12
  5. Step 5: Solve for x
    x = 545,067,349,734.12/658,290.80
  6. Step 6: Final answer
    x = 828,003.90

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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.