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Finding the Fourth Proportional to 561,679.80, 842,519.70 and 532,811.40

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Solution

The fourth proportional to 561,679.80, 842,519.70 and 532,811.40 is: 799,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,679.80 : 842,519.70 = 532,811.40 : x
  2. Step 2: Convert to fraction form
    561,679.80/842,519.70 = 532,811.40/x
  3. Step 3: Cross multiply
    561,679.80x = 842,519.70 × 532,811.40
  4. Step 4: Simplify right side
    561,679.80x = 448,904,100,884.58
  5. Step 5: Solve for x
    x = 448,904,100,884.58/561,679.80
  6. Step 6: Final answer
    x = 799,217.10

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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.