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Finding the Fourth Proportional to 805,843.20, 1,207,015.20 and 700,867.20

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Solution

The fourth proportional to 805,843.20, 1,207,015.20 and 700,867.20 is: 1,049,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,843.20 : 1,207,015.20 = 700,867.20 : x
  2. Step 2: Convert to fraction form
    805,843.20/1,207,015.20 = 700,867.20/x
  3. Step 3: Cross multiply
    805,843.20x = 1,207,015.20 × 700,867.20
  4. Step 4: Simplify right side
    805,843.20x = 845,957,363,581.44
  5. Step 5: Solve for x
    x = 845,957,363,581.44/805,843.20
  6. Step 6: Final answer
    x = 1,049,779.12

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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.