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Finding the Fourth Proportional to 647,531.61, 969,465.79 and 343,232.43

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Solution

The fourth proportional to 647,531.61, 969,465.79 and 343,232.43 is: 513,877.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,531.61 : 969,465.79 = 343,232.43 : x
  2. Step 2: Convert to fraction form
    647,531.61/969,465.79 = 343,232.43/x
  3. Step 3: Cross multiply
    647,531.61x = 969,465.79 × 343,232.43
  4. Step 4: Simplify right side
    647,531.61x = 332,752,098,903.57
  5. Step 5: Solve for x
    x = 332,752,098,903.57/647,531.61
  6. Step 6: Final answer
    x = 513,877.77

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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.