Home / 1,353,729.80-1,867,910.28-772,687.64

Finding the Fourth Proportional to 1,353,729.80, 1,867,910.28 and 772,687.64

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Solution

The fourth proportional to 1,353,729.80, 1,867,910.28 and 772,687.64 is: 1,066,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,729.80 : 1,867,910.28 = 772,687.64 : x
  2. Step 2: Convert to fraction form
    1,353,729.80/1,867,910.28 = 772,687.64/x
  3. Step 3: Cross multiply
    1,353,729.80x = 1,867,910.28 × 772,687.64
  4. Step 4: Simplify right side
    1,353,729.80x = 1,443,311,185,984.94
  5. Step 5: Solve for x
    x = 1,443,311,185,984.94/1,353,729.80
  6. Step 6: Final answer
    x = 1,066,173.76

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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.