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Finding the Fourth Proportional to 668,002.80, 1,002,781.80 and 402,063.60

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Solution

The fourth proportional to 668,002.80, 1,002,781.80 and 402,063.60 is: 603,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,002.80 : 1,002,781.80 = 402,063.60 : x
  2. Step 2: Convert to fraction form
    668,002.80/1,002,781.80 = 402,063.60/x
  3. Step 3: Cross multiply
    668,002.80x = 1,002,781.80 × 402,063.60
  4. Step 4: Simplify right side
    668,002.80x = 403,182,060,522.48
  5. Step 5: Solve for x
    x = 403,182,060,522.48/668,002.80
  6. Step 6: Final answer
    x = 603,563.43

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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.