Home / 1,389,356.25-2,083,742.73-391,850.97

Finding the Fourth Proportional to 1,389,356.25, 2,083,742.73 and 391,850.97

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Solution

The fourth proportional to 1,389,356.25, 2,083,742.73 and 391,850.97 is: 587,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,356.25 : 2,083,742.73 = 391,850.97 : x
  2. Step 2: Convert to fraction form
    1,389,356.25/2,083,742.73 = 391,850.97/x
  3. Step 3: Cross multiply
    1,389,356.25x = 2,083,742.73 × 391,850.97
  4. Step 4: Simplify right side
    1,389,356.25x = 816,516,609,980.95
  5. Step 5: Solve for x
    x = 816,516,609,980.95/1,389,356.25
  6. Step 6: Final answer
    x = 587,694.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.