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Finding the Fourth Proportional to 659,296.80, 988,945.20 and 446,720.40

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Solution

The fourth proportional to 659,296.80, 988,945.20 and 446,720.40 is: 670,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,296.80 : 988,945.20 = 446,720.40 : x
  2. Step 2: Convert to fraction form
    659,296.80/988,945.20 = 446,720.40/x
  3. Step 3: Cross multiply
    659,296.80x = 988,945.20 × 446,720.40
  4. Step 4: Simplify right side
    659,296.80x = 441,781,995,322.08
  5. Step 5: Solve for x
    x = 441,781,995,322.08/659,296.80
  6. Step 6: Final answer
    x = 670,080.60

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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.