Home / 668,771.12-1,002,566.19-511,700.78

Finding the Fourth Proportional to 668,771.12, 1,002,566.19 and 511,700.78

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Solution

The fourth proportional to 668,771.12, 1,002,566.19 and 511,700.78 is: 767,099.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,771.12 : 1,002,566.19 = 511,700.78 : x
  2. Step 2: Convert to fraction form
    668,771.12/1,002,566.19 = 511,700.78/x
  3. Step 3: Cross multiply
    668,771.12x = 1,002,566.19 × 511,700.78
  4. Step 4: Simplify right side
    668,771.12x = 513,013,900,122.60
  5. Step 5: Solve for x
    x = 513,013,900,122.60/668,771.12
  6. Step 6: Final answer
    x = 767,099.36

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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.