Home / 765,402.40-1,148,363.05-338,879.39

Finding the Fourth Proportional to 765,402.40, 1,148,363.05 and 338,879.39

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Solution

The fourth proportional to 765,402.40, 1,148,363.05 and 338,879.39 is: 508,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,402.40 : 1,148,363.05 = 338,879.39 : x
  2. Step 2: Convert to fraction form
    765,402.40/1,148,363.05 = 338,879.39/x
  3. Step 3: Cross multiply
    765,402.40x = 1,148,363.05 × 338,879.39
  4. Step 4: Simplify right side
    765,402.40x = 389,156,571,906.25
  5. Step 5: Solve for x
    x = 389,156,571,906.25/765,402.40
  6. Step 6: Final answer
    x = 508,433.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.