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Finding the Fourth Proportional to 664,400.40, 996,600.60 and 660,463.80

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Solution

The fourth proportional to 664,400.40, 996,600.60 and 660,463.80 is: 990,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,400.40 : 996,600.60 = 660,463.80 : x
  2. Step 2: Convert to fraction form
    664,400.40/996,600.60 = 660,463.80/x
  3. Step 3: Cross multiply
    664,400.40x = 996,600.60 × 660,463.80
  4. Step 4: Simplify right side
    664,400.40x = 658,218,619,358.28
  5. Step 5: Solve for x
    x = 658,218,619,358.28/664,400.40
  6. Step 6: Final answer
    x = 990,695.70

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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.