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Finding the Fourth Proportional to 665,765.28, 918,759.72 and 363,959.28

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Solution

The fourth proportional to 665,765.28, 918,759.72 and 363,959.28 is: 502,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,765.28 : 918,759.72 = 363,959.28 : x
  2. Step 2: Convert to fraction form
    665,765.28/918,759.72 = 363,959.28/x
  3. Step 3: Cross multiply
    665,765.28x = 918,759.72 × 363,959.28
  4. Step 4: Simplify right side
    665,765.28x = 334,391,126,184.20
  5. Step 5: Solve for x
    x = 334,391,126,184.20/665,765.28
  6. Step 6: Final answer
    x = 502,265.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.