Home / 2,143,680.60-3,215,538.18-778,419.48

Finding the Fourth Proportional to 2,143,680.60, 3,215,538.18 and 778,419.48

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Solution

The fourth proportional to 2,143,680.60, 3,215,538.18 and 778,419.48 is: 1,167,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143,680.60 : 3,215,538.18 = 778,419.48 : x
  2. Step 2: Convert to fraction form
    2,143,680.60/3,215,538.18 = 778,419.48/x
  3. Step 3: Cross multiply
    2,143,680.60x = 3,215,538.18 × 778,419.48
  4. Step 4: Simplify right side
    2,143,680.60x = 2,503,037,557,995.75
  5. Step 5: Solve for x
    x = 2,503,037,557,995.75/2,143,680.60
  6. Step 6: Final answer
    x = 1,167,635.49

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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.