Home / 1,371,081.48-1,891,867.14-861,423

Finding the Fourth Proportional to 1,371,081.48, 1,891,867.14 and 861,423

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Solution

The fourth proportional to 1,371,081.48, 1,891,867.14 and 861,423 is: 1,188,622.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371,081.48 : 1,891,867.14 = 861,423 : x
  2. Step 2: Convert to fraction form
    1,371,081.48/1,891,867.14 = 861,423/x
  3. Step 3: Cross multiply
    1,371,081.48x = 1,891,867.14 × 861,423
  4. Step 4: Simplify right side
    1,371,081.48x = 1,629,697,867,340.22
  5. Step 5: Solve for x
    x = 1,629,697,867,340.22/1,371,081.48
  6. Step 6: Final answer
    x = 1,188,622.19

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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.