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Finding the Fourth Proportional to 713,020.32, 981,894.15 and 667,432.71

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Solution

The fourth proportional to 713,020.32, 981,894.15 and 667,432.71 is: 919,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,020.32 : 981,894.15 = 667,432.71 : x
  2. Step 2: Convert to fraction form
    713,020.32/981,894.15 = 667,432.71/x
  3. Step 3: Cross multiply
    713,020.32x = 981,894.15 × 667,432.71
  4. Step 4: Simplify right side
    713,020.32x = 655,348,273,467.65
  5. Step 5: Solve for x
    x = 655,348,273,467.65/713,020.32
  6. Step 6: Final answer
    x = 919,115.84

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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.