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Finding the Fourth Proportional to 629,627.90, 868,861.16 and 343,141.82

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Solution

The fourth proportional to 629,627.90, 868,861.16 and 343,141.82 is: 473,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,627.90 : 868,861.16 = 343,141.82 : x
  2. Step 2: Convert to fraction form
    629,627.90/868,861.16 = 343,141.82/x
  3. Step 3: Cross multiply
    629,627.90x = 868,861.16 × 343,141.82
  4. Step 4: Simplify right side
    629,627.90x = 298,142,599,769.71
  5. Step 5: Solve for x
    x = 298,142,599,769.71/629,627.90
  6. Step 6: Final answer
    x = 473,521.90

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1.5x scale

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.