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Finding the Fourth Proportional to 668,854.98, 1,002,691.80 and 511,784.64

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Solution

The fourth proportional to 668,854.98, 1,002,691.80 and 511,784.64 is: 767,225.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,854.98 : 1,002,691.80 = 511,784.64 : x
  2. Step 2: Convert to fraction form
    668,854.98/1,002,691.80 = 511,784.64/x
  3. Step 3: Cross multiply
    668,854.98x = 1,002,691.80 × 511,784.64
  4. Step 4: Simplify right side
    668,854.98x = 513,162,261,893.95
  5. Step 5: Solve for x
    x = 513,162,261,893.95/668,854.98
  6. Step 6: Final answer
    x = 767,225.00

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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.