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Finding the Fourth Proportional to 647,588.60, 971,382.90 and 513,744.20

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Solution

The fourth proportional to 647,588.60, 971,382.90 and 513,744.20 is: 770,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,588.60 : 971,382.90 = 513,744.20 : x
  2. Step 2: Convert to fraction form
    647,588.60/971,382.90 = 513,744.20/x
  3. Step 3: Cross multiply
    647,588.60x = 971,382.90 × 513,744.20
  4. Step 4: Simplify right side
    647,588.60x = 499,042,330,854.18
  5. Step 5: Solve for x
    x = 499,042,330,854.18/647,588.60
  6. Step 6: Final answer
    x = 770,616.30

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Similar ratio
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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.