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Finding the Fourth Proportional to 663,941.44, 995,401.68 and 343,750

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Solution

The fourth proportional to 663,941.44, 995,401.68 and 343,750 is: 515,360.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,941.44 : 995,401.68 = 343,750 : x
  2. Step 2: Convert to fraction form
    663,941.44/995,401.68 = 343,750/x
  3. Step 3: Cross multiply
    663,941.44x = 995,401.68 × 343,750
  4. Step 4: Simplify right side
    663,941.44x = 342,169,327,500
  5. Step 5: Solve for x
    x = 342,169,327,500/663,941.44
  6. Step 6: Final answer
    x = 515,360.70

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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.