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Finding the Fourth Proportional to 987,700.60, 1,481,615.70 and 277,751.80

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Solution

The fourth proportional to 987,700.60, 1,481,615.70 and 277,751.80 is: 416,645.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,700.60 : 1,481,615.70 = 277,751.80 : x
  2. Step 2: Convert to fraction form
    987,700.60/1,481,615.70 = 277,751.80/x
  3. Step 3: Cross multiply
    987,700.60x = 1,481,615.70 × 277,751.80
  4. Step 4: Simplify right side
    987,700.60x = 411,521,427,583.26
  5. Step 5: Solve for x
    x = 411,521,427,583.26/987,700.60
  6. Step 6: Final answer
    x = 416,645.92

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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.