Home / 686,454.08-1,029,691.82-259,875.40

Finding the Fourth Proportional to 686,454.08, 1,029,691.82 and 259,875.40

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Solution

The fourth proportional to 686,454.08, 1,029,691.82 and 259,875.40 is: 389,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,454.08 : 1,029,691.82 = 259,875.40 : x
  2. Step 2: Convert to fraction form
    686,454.08/1,029,691.82 = 259,875.40/x
  3. Step 3: Cross multiply
    686,454.08x = 1,029,691.82 × 259,875.40
  4. Step 4: Simplify right side
    686,454.08x = 267,591,573,605.36
  5. Step 5: Solve for x
    x = 267,591,573,605.36/686,454.08
  6. Step 6: Final answer
    x = 389,817.15

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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.