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Finding the Fourth Proportional to 629,353.90, 868,505.79 and 342,873.10

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Solution

The fourth proportional to 629,353.90, 868,505.79 and 342,873.10 is: 473,163.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,353.90 : 868,505.79 = 342,873.10 : x
  2. Step 2: Convert to fraction form
    629,353.90/868,505.79 = 342,873.10/x
  3. Step 3: Cross multiply
    629,353.90x = 868,505.79 × 342,873.10
  4. Step 4: Simplify right side
    629,353.90x = 297,787,272,585.25
  5. Step 5: Solve for x
    x = 297,787,272,585.25/629,353.90
  6. Step 6: Final answer
    x = 473,163.47

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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.