Home / 1,220,955.12-1,685,019.05-677,266.57

Finding the Fourth Proportional to 1,220,955.12, 1,685,019.05 and 677,266.57

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Solution

The fourth proportional to 1,220,955.12, 1,685,019.05 and 677,266.57 is: 934,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,955.12 : 1,685,019.05 = 677,266.57 : x
  2. Step 2: Convert to fraction form
    1,220,955.12/1,685,019.05 = 677,266.57/x
  3. Step 3: Cross multiply
    1,220,955.12x = 1,685,019.05 × 677,266.57
  4. Step 4: Simplify right side
    1,220,955.12x = 1,141,207,067,969.24
  5. Step 5: Solve for x
    x = 1,141,207,067,969.24/1,220,955.12
  6. Step 6: Final answer
    x = 934,683.88

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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.