Home / 3,914,649.38-5,402,205.09-2,172,581.78

Finding the Fourth Proportional to 3,914,649.38, 5,402,205.09 and 2,172,581.78

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Solution

The fourth proportional to 3,914,649.38, 5,402,205.09 and 2,172,581.78 is: 2,998,156.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914,649.38 : 5,402,205.09 = 2,172,581.78 : x
  2. Step 2: Convert to fraction form
    3,914,649.38/5,402,205.09 = 2,172,581.78/x
  3. Step 3: Cross multiply
    3,914,649.38x = 5,402,205.09 × 2,172,581.78
  4. Step 4: Simplify right side
    3,914,649.38x = 11,736,732,312,483.33
  5. Step 5: Solve for x
    x = 11,736,732,312,483.33/3,914,649.38
  6. Step 6: Final answer
    x = 2,998,156.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.