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Finding the Fourth Proportional to 876,704.80, 1,315,057.20 and 344,048.80

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Solution

The fourth proportional to 876,704.80, 1,315,057.20 and 344,048.80 is: 516,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,704.80 : 1,315,057.20 = 344,048.80 : x
  2. Step 2: Convert to fraction form
    876,704.80/1,315,057.20 = 344,048.80/x
  3. Step 3: Cross multiply
    876,704.80x = 1,315,057.20 × 344,048.80
  4. Step 4: Simplify right side
    876,704.80x = 452,443,851,591.36
  5. Step 5: Solve for x
    x = 452,443,851,591.36/876,704.80
  6. Step 6: Final answer
    x = 516,073.20

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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.