Home / 865,716.80-1,298,575.20-487,803.20

Finding the Fourth Proportional to 865,716.80, 1,298,575.20 and 487,803.20

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Solution

The fourth proportional to 865,716.80, 1,298,575.20 and 487,803.20 is: 731,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,716.80 : 1,298,575.20 = 487,803.20 : x
  2. Step 2: Convert to fraction form
    865,716.80/1,298,575.20 = 487,803.20/x
  3. Step 3: Cross multiply
    865,716.80x = 1,298,575.20 × 487,803.20
  4. Step 4: Simplify right side
    865,716.80x = 633,449,138,000.64
  5. Step 5: Solve for x
    x = 633,449,138,000.64/865,716.80
  6. Step 6: Final answer
    x = 731,704.80

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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.