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Finding the Fourth Proportional to 787,401, 1,086,613.38 and 429,705

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Solution

The fourth proportional to 787,401, 1,086,613.38 and 429,705 is: 592,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,401 : 1,086,613.38 = 429,705 : x
  2. Step 2: Convert to fraction form
    787,401/1,086,613.38 = 429,705/x
  3. Step 3: Cross multiply
    787,401x = 1,086,613.38 × 429,705
  4. Step 4: Simplify right side
    787,401x = 466,923,202,452.90
  5. Step 5: Solve for x
    x = 466,923,202,452.90/787,401
  6. Step 6: Final answer
    x = 592,992.90

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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.