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Finding the Fourth Proportional to 676,200, 933,185.16 and 374,394

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Solution

The fourth proportional to 676,200, 933,185.16 and 374,394 is: 516,679.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,200 : 933,185.16 = 374,394 : x
  2. Step 2: Convert to fraction form
    676,200/933,185.16 = 374,394/x
  3. Step 3: Cross multiply
    676,200x = 933,185.16 × 374,394
  4. Step 4: Simplify right side
    676,200x = 349,378,924,793.04
  5. Step 5: Solve for x
    x = 349,378,924,793.04/676,200
  6. Step 6: Final answer
    x = 516,679.87

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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.