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Finding the Fourth Proportional to 648,568.70, 971,540.85 and 449,114.30

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Solution

The fourth proportional to 648,568.70, 971,540.85 and 449,114.30 is: 672,762.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,568.70 : 971,540.85 = 449,114.30 : x
  2. Step 2: Convert to fraction form
    648,568.70/971,540.85 = 449,114.30/x
  3. Step 3: Cross multiply
    648,568.70x = 971,540.85 × 449,114.30
  4. Step 4: Simplify right side
    648,568.70x = 436,332,888,769.16
  5. Step 5: Solve for x
    x = 436,332,888,769.16/648,568.70
  6. Step 6: Final answer
    x = 672,762.79

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1.5x scale

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.