Home / 2,087,785.85-3,130,910.61-721,211.90

Finding the Fourth Proportional to 2,087,785.85, 3,130,910.61 and 721,211.90

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Solution

The fourth proportional to 2,087,785.85, 3,130,910.61 and 721,211.90 is: 1,081,552.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087,785.85 : 3,130,910.61 = 721,211.90 : x
  2. Step 2: Convert to fraction form
    2,087,785.85/3,130,910.61 = 721,211.90/x
  3. Step 3: Cross multiply
    2,087,785.85x = 3,130,910.61 × 721,211.90
  4. Step 4: Simplify right side
    2,087,785.85x = 2,258,049,989,768.26
  5. Step 5: Solve for x
    x = 2,258,049,989,768.26/2,087,785.85
  6. Step 6: Final answer
    x = 1,081,552.49

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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.