Home / 991,122.24-1,367,722.11-561,540.78

Finding the Fourth Proportional to 991,122.24, 1,367,722.11 and 561,540.78

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Solution

The fourth proportional to 991,122.24, 1,367,722.11 and 561,540.78 is: 774,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,122.24 : 1,367,722.11 = 561,540.78 : x
  2. Step 2: Convert to fraction form
    991,122.24/1,367,722.11 = 561,540.78/x
  3. Step 3: Cross multiply
    991,122.24x = 1,367,722.11 × 561,540.78
  4. Step 4: Simplify right side
    991,122.24x = 768,031,740,472.65
  5. Step 5: Solve for x
    x = 768,031,740,472.65/991,122.24
  6. Step 6: Final answer
    x = 774,911.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.