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Finding the Fourth Proportional to 453,287.80, 679,931.70 and 303,988.60

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Solution

The fourth proportional to 453,287.80, 679,931.70 and 303,988.60 is: 455,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,287.80 : 679,931.70 = 303,988.60 : x
  2. Step 2: Convert to fraction form
    453,287.80/679,931.70 = 303,988.60/x
  3. Step 3: Cross multiply
    453,287.80x = 679,931.70 × 303,988.60
  4. Step 4: Simplify right side
    453,287.80x = 206,691,485,578.62
  5. Step 5: Solve for x
    x = 206,691,485,578.62/453,287.80
  6. Step 6: Final answer
    x = 455,982.90

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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.