Home / 2,172,665.80-3,258,998.70-1,331,691.40

Finding the Fourth Proportional to 2,172,665.80, 3,258,998.70 and 1,331,691.40

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Solution

The fourth proportional to 2,172,665.80, 3,258,998.70 and 1,331,691.40 is: 1,997,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172,665.80 : 3,258,998.70 = 1,331,691.40 : x
  2. Step 2: Convert to fraction form
    2,172,665.80/3,258,998.70 = 1,331,691.40/x
  3. Step 3: Cross multiply
    2,172,665.80x = 3,258,998.70 × 1,331,691.40
  4. Step 4: Simplify right side
    2,172,665.80x = 4,339,980,541,401.18
  5. Step 5: Solve for x
    x = 4,339,980,541,401.18/2,172,665.80
  6. Step 6: Final answer
    x = 1,997,537.10

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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.