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Finding the Fourth Proportional to 703,956.76, 971,516.40 and 398,097.52

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Solution

The fourth proportional to 703,956.76, 971,516.40 and 398,097.52 is: 549,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,956.76 : 971,516.40 = 398,097.52 : x
  2. Step 2: Convert to fraction form
    703,956.76/971,516.40 = 398,097.52/x
  3. Step 3: Cross multiply
    703,956.76x = 971,516.40 × 398,097.52
  4. Step 4: Simplify right side
    703,956.76x = 386,758,269,479.33
  5. Step 5: Solve for x
    x = 386,758,269,479.33/703,956.76
  6. Step 6: Final answer
    x = 549,406.29

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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.