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Finding the Fourth Proportional to 703,999.52, 971,513.43 and 398,135.96

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Solution

The fourth proportional to 703,999.52, 971,513.43 and 398,135.96 is: 549,424.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,999.52 : 971,513.43 = 398,135.96 : x
  2. Step 2: Convert to fraction form
    703,999.52/971,513.43 = 398,135.96/x
  3. Step 3: Cross multiply
    703,999.52x = 971,513.43 × 398,135.96
  4. Step 4: Simplify right side
    703,999.52x = 386,794,432,105.94
  5. Step 5: Solve for x
    x = 386,794,432,105.94/703,999.52
  6. Step 6: Final answer
    x = 549,424.28

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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.