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Finding the Fourth Proportional to 703,997.52, 971,510.67 and 398,133.96

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Solution

The fourth proportional to 703,997.52, 971,510.67 and 398,133.96 is: 549,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,997.52 : 971,510.67 = 398,133.96 : x
  2. Step 2: Convert to fraction form
    703,997.52/971,510.67 = 398,133.96/x
  3. Step 3: Cross multiply
    703,997.52x = 971,510.67 × 398,133.96
  4. Step 4: Simplify right side
    703,997.52x = 386,791,390,229.35
  5. Step 5: Solve for x
    x = 386,791,390,229.35/703,997.52
  6. Step 6: Final answer
    x = 549,421.52

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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.