Home / 991,589.88-1,368,408.78-538,881.24

Finding the Fourth Proportional to 991,589.88, 1,368,408.78 and 538,881.24

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Solution

The fourth proportional to 991,589.88, 1,368,408.78 and 538,881.24 is: 743,664.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,589.88 : 1,368,408.78 = 538,881.24 : x
  2. Step 2: Convert to fraction form
    991,589.88/1,368,408.78 = 538,881.24/x
  3. Step 3: Cross multiply
    991,589.88x = 1,368,408.78 × 538,881.24
  4. Step 4: Simplify right side
    991,589.88x = 737,409,820,193.29
  5. Step 5: Solve for x
    x = 737,409,820,193.29/991,589.88
  6. Step 6: Final answer
    x = 743,664.12

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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.