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Finding the Fourth Proportional to 659,319.80, 988,979.70 and 446,743.40

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Solution

The fourth proportional to 659,319.80, 988,979.70 and 446,743.40 is: 670,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,319.80 : 988,979.70 = 446,743.40 : x
  2. Step 2: Convert to fraction form
    659,319.80/988,979.70 = 446,743.40/x
  3. Step 3: Cross multiply
    659,319.80x = 988,979.70 × 446,743.40
  4. Step 4: Simplify right side
    659,319.80x = 441,820,153,708.98
  5. Step 5: Solve for x
    x = 441,820,153,708.98/659,319.80
  6. Step 6: Final answer
    x = 670,115.10

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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.