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Finding the Fourth Proportional to 664,465.40, 996,698.10 and 660,528.80

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Solution

The fourth proportional to 664,465.40, 996,698.10 and 660,528.80 is: 990,793.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,465.40 : 996,698.10 = 660,528.80 : x
  2. Step 2: Convert to fraction form
    664,465.40/996,698.10 = 660,528.80/x
  3. Step 3: Cross multiply
    664,465.40x = 996,698.10 × 660,528.80
  4. Step 4: Simplify right side
    664,465.40x = 658,347,799,955.28
  5. Step 5: Solve for x
    x = 658,347,799,955.28/664,465.40
  6. Step 6: Final answer
    x = 990,793.20

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Double scale
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Similar ratio
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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.