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Finding the Fourth Proportional to 629,265.70, 868,708.56 and 426,388.78

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Solution

The fourth proportional to 629,265.70, 868,708.56 and 426,388.78 is: 588,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,265.70 : 868,708.56 = 426,388.78 : x
  2. Step 2: Convert to fraction form
    629,265.70/868,708.56 = 426,388.78/x
  3. Step 3: Cross multiply
    629,265.70x = 868,708.56 × 426,388.78
  4. Step 4: Simplify right side
    629,265.70x = 370,407,583,073.96
  5. Step 5: Solve for x
    x = 370,407,583,073.96/629,265.70
  6. Step 6: Final answer
    x = 588,634.63

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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.