Home / 991,191.95-1,367,872.92-561,471.95

Finding the Fourth Proportional to 991,191.95, 1,367,872.92 and 561,471.95

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Solution

The fourth proportional to 991,191.95, 1,367,872.92 and 561,471.95 is: 774,847.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,191.95 : 1,367,872.92 = 561,471.95 : x
  2. Step 2: Convert to fraction form
    991,191.95/1,367,872.92 = 561,471.95/x
  3. Step 3: Cross multiply
    991,191.95x = 1,367,872.92 × 561,471.95
  4. Step 4: Simplify right side
    991,191.95x = 768,022,275,744.59
  5. Step 5: Solve for x
    x = 768,022,275,744.59/991,191.95
  6. Step 6: Final answer
    x = 774,847.17

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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.