Home / 668,780.91-1,002,960.63-219,397.06

Finding the Fourth Proportional to 668,780.91, 1,002,960.63 and 219,397.06

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Solution

The fourth proportional to 668,780.91, 1,002,960.63 and 219,397.06 is: 329,026.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,780.91 : 1,002,960.63 = 219,397.06 : x
  2. Step 2: Convert to fraction form
    668,780.91/1,002,960.63 = 219,397.06/x
  3. Step 3: Cross multiply
    668,780.91x = 1,002,960.63 × 219,397.06
  4. Step 4: Simplify right side
    668,780.91x = 220,046,608,502.95
  5. Step 5: Solve for x
    x = 220,046,608,502.95/668,780.91
  6. Step 6: Final answer
    x = 329,026.45

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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.