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Finding the Fourth Proportional to 698,717.13, 963,956.46 and 392,723.32

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Solution

The fourth proportional to 698,717.13, 963,956.46 and 392,723.32 is: 541,804.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,717.13 : 963,956.46 = 392,723.32 : x
  2. Step 2: Convert to fraction form
    698,717.13/963,956.46 = 392,723.32/x
  3. Step 3: Cross multiply
    698,717.13x = 963,956.46 × 392,723.32
  4. Step 4: Simplify right side
    698,717.13x = 378,568,181,306.65
  5. Step 5: Solve for x
    x = 378,568,181,306.65/698,717.13
  6. Step 6: Final answer
    x = 541,804.64

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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.