Home / 865,298.08-1,298,761.08-439,139.80

Finding the Fourth Proportional to 865,298.08, 1,298,761.08 and 439,139.80

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Solution

The fourth proportional to 865,298.08, 1,298,761.08 and 439,139.80 is: 659,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,298.08 : 1,298,761.08 = 439,139.80 : x
  2. Step 2: Convert to fraction form
    865,298.08/1,298,761.08 = 439,139.80/x
  3. Step 3: Cross multiply
    865,298.08x = 1,298,761.08 × 439,139.80
  4. Step 4: Simplify right side
    865,298.08x = 570,337,680,918.98
  5. Step 5: Solve for x
    x = 570,337,680,918.98/865,298.08
  6. Step 6: Final answer
    x = 659,122.79

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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.