Home / 2,154,338.90-3,231,982.20-638,140.40

Finding the Fourth Proportional to 2,154,338.90, 3,231,982.20 and 638,140.40

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Solution

The fourth proportional to 2,154,338.90, 3,231,982.20 and 638,140.40 is: 957,350.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154,338.90 : 3,231,982.20 = 638,140.40 : x
  2. Step 2: Convert to fraction form
    2,154,338.90/3,231,982.20 = 638,140.40/x
  3. Step 3: Cross multiply
    2,154,338.90x = 3,231,982.20 × 638,140.40
  4. Step 4: Simplify right side
    2,154,338.90x = 2,062,458,413,900.88
  5. Step 5: Solve for x
    x = 2,062,458,413,900.88/2,154,338.90
  6. Step 6: Final answer
    x = 957,350.96

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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.