Home / 1,221,084.30-1,685,199.87-677,395.29

Finding the Fourth Proportional to 1,221,084.30, 1,685,199.87 and 677,395.29

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Solution

The fourth proportional to 1,221,084.30, 1,685,199.87 and 677,395.29 is: 934,862.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,084.30 : 1,685,199.87 = 677,395.29 : x
  2. Step 2: Convert to fraction form
    1,221,084.30/1,685,199.87 = 677,395.29/x
  3. Step 3: Cross multiply
    1,221,084.30x = 1,685,199.87 × 677,395.29
  4. Step 4: Simplify right side
    1,221,084.30x = 1,141,546,454,646.61
  5. Step 5: Solve for x
    x = 1,141,546,454,646.61/1,221,084.30
  6. Step 6: Final answer
    x = 934,862.94

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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.