Home / 1,115,378.29-1,539,097.11-631,839.88

Finding the Fourth Proportional to 1,115,378.29, 1,539,097.11 and 631,839.88

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Solution

The fourth proportional to 1,115,378.29, 1,539,097.11 and 631,839.88 is: 871,868.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,378.29 : 1,539,097.11 = 631,839.88 : x
  2. Step 2: Convert to fraction form
    1,115,378.29/1,539,097.11 = 631,839.88/x
  3. Step 3: Cross multiply
    1,115,378.29x = 1,539,097.11 × 631,839.88
  4. Step 4: Simplify right side
    1,115,378.29x = 972,462,933,290.75
  5. Step 5: Solve for x
    x = 972,462,933,290.75/1,115,378.29
  6. Step 6: Final answer
    x = 871,868.26

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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.