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Finding the Fourth Proportional to 659,387.80, 989,081.70 and 446,811.40

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Solution

The fourth proportional to 659,387.80, 989,081.70 and 446,811.40 is: 670,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,387.80 : 989,081.70 = 446,811.40 : x
  2. Step 2: Convert to fraction form
    659,387.80/989,081.70 = 446,811.40/x
  3. Step 3: Cross multiply
    659,387.80x = 989,081.70 × 446,811.40
  4. Step 4: Simplify right side
    659,387.80x = 441,932,979,091.38
  5. Step 5: Solve for x
    x = 441,932,979,091.38/659,387.80
  6. Step 6: Final answer
    x = 670,217.10

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Similar ratio
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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.