Home / 1,083,943.20-1,496,090.40-721,382.40

Finding the Fourth Proportional to 1,083,943.20, 1,496,090.40 and 721,382.40

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Solution

The fourth proportional to 1,083,943.20, 1,496,090.40 and 721,382.40 is: 995,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083,943.20 : 1,496,090.40 = 721,382.40 : x
  2. Step 2: Convert to fraction form
    1,083,943.20/1,496,090.40 = 721,382.40/x
  3. Step 3: Cross multiply
    1,083,943.20x = 1,496,090.40 × 721,382.40
  4. Step 4: Simplify right side
    1,083,943.20x = 1,079,253,283,368.96
  5. Step 5: Solve for x
    x = 1,079,253,283,368.96/1,083,943.20
  6. Step 6: Final answer
    x = 995,673.28

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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.