Home / 1,391,843.40-2,087,734.86-445,211.28

Finding the Fourth Proportional to 1,391,843.40, 2,087,734.86 and 445,211.28

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Solution

The fourth proportional to 1,391,843.40, 2,087,734.86 and 445,211.28 is: 667,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,843.40 : 2,087,734.86 = 445,211.28 : x
  2. Step 2: Convert to fraction form
    1,391,843.40/2,087,734.86 = 445,211.28/x
  3. Step 3: Cross multiply
    1,391,843.40x = 2,087,734.86 × 445,211.28
  4. Step 4: Simplify right side
    1,391,843.40x = 929,483,109,321.22
  5. Step 5: Solve for x
    x = 929,483,109,321.22/1,391,843.40
  6. Step 6: Final answer
    x = 667,807.25

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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.