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Finding the Fourth Proportional to 647,634.80, 971,029.80 and 581,279.60

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Solution

The fourth proportional to 647,634.80, 971,029.80 and 581,279.60 is: 871,540.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,634.80 : 971,029.80 = 581,279.60 : x
  2. Step 2: Convert to fraction form
    647,634.80/971,029.80 = 581,279.60/x
  3. Step 3: Cross multiply
    647,634.80x = 971,029.80 × 581,279.60
  4. Step 4: Simplify right side
    647,634.80x = 564,439,813,732.08
  5. Step 5: Solve for x
    x = 564,439,813,732.08/647,634.80
  6. Step 6: Final answer
    x = 871,540.28

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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.