Home / 1,311,649.28-1,810,028.21-730,842.39

Finding the Fourth Proportional to 1,311,649.28, 1,810,028.21 and 730,842.39

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Solution

The fourth proportional to 1,311,649.28, 1,810,028.21 and 730,842.39 is: 1,008,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,649.28 : 1,810,028.21 = 730,842.39 : x
  2. Step 2: Convert to fraction form
    1,311,649.28/1,810,028.21 = 730,842.39/x
  3. Step 3: Cross multiply
    1,311,649.28x = 1,810,028.21 × 730,842.39
  4. Step 4: Simplify right side
    1,311,649.28x = 1,322,845,339,309.61
  5. Step 5: Solve for x
    x = 1,322,845,339,309.61/1,311,649.28
  6. Step 6: Final answer
    x = 1,008,535.87

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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.