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Finding the Fourth Proportional to 650,240.97, 897,345.45 and 392,116.65

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Solution

The fourth proportional to 650,240.97, 897,345.45 and 392,116.65 is: 541,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,240.97 : 897,345.45 = 392,116.65 : x
  2. Step 2: Convert to fraction form
    650,240.97/897,345.45 = 392,116.65/x
  3. Step 3: Cross multiply
    650,240.97x = 897,345.45 × 392,116.65
  4. Step 4: Simplify right side
    650,240.97x = 351,864,091,746.74
  5. Step 5: Solve for x
    x = 351,864,091,746.74/650,240.97
  6. Step 6: Final answer
    x = 541,128.76

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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.