Home / 865,928.88-1,299,013.20-266,937.12

Finding the Fourth Proportional to 865,928.88, 1,299,013.20 and 266,937.12

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Solution

The fourth proportional to 865,928.88, 1,299,013.20 and 266,937.12 is: 400,442.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,928.88 : 1,299,013.20 = 266,937.12 : x
  2. Step 2: Convert to fraction form
    865,928.88/1,299,013.20 = 266,937.12/x
  3. Step 3: Cross multiply
    865,928.88x = 1,299,013.20 × 266,937.12
  4. Step 4: Simplify right side
    865,928.88x = 346,754,842,449.98
  5. Step 5: Solve for x
    x = 346,754,842,449.98/865,928.88
  6. Step 6: Final answer
    x = 400,442.64

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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.