Home / 686,562.78-1,029,703.40-259,951.43

Finding the Fourth Proportional to 686,562.78, 1,029,703.40 and 259,951.43

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Solution

The fourth proportional to 686,562.78, 1,029,703.40 and 259,951.43 is: 389,873.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,562.78 : 1,029,703.40 = 259,951.43 : x
  2. Step 2: Convert to fraction form
    686,562.78/1,029,703.40 = 259,951.43/x
  3. Step 3: Cross multiply
    686,562.78x = 1,029,703.40 × 259,951.43
  4. Step 4: Simplify right side
    686,562.78x = 267,672,864,857.59
  5. Step 5: Solve for x
    x = 267,672,864,857.59/686,562.78
  6. Step 6: Final answer
    x = 389,873.84

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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.