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Finding the Fourth Proportional to 695,353.68, 959,508.72 and 389,387.52

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Solution

The fourth proportional to 695,353.68, 959,508.72 and 389,387.52 is: 537,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,353.68 : 959,508.72 = 389,387.52 : x
  2. Step 2: Convert to fraction form
    695,353.68/959,508.72 = 389,387.52/x
  3. Step 3: Cross multiply
    695,353.68x = 959,508.72 × 389,387.52
  4. Step 4: Simplify right side
    695,353.68x = 373,620,720,899.17
  5. Step 5: Solve for x
    x = 373,620,720,899.17/695,353.68
  6. Step 6: Final answer
    x = 537,310.34

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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.