Home / 2,124,788.72-3,186,917.80-861,402.48

Finding the Fourth Proportional to 2,124,788.72, 3,186,917.80 and 861,402.48

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Solution

The fourth proportional to 2,124,788.72, 3,186,917.80 and 861,402.48 is: 1,291,996.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124,788.72 : 3,186,917.80 = 861,402.48 : x
  2. Step 2: Convert to fraction form
    2,124,788.72/3,186,917.80 = 861,402.48/x
  3. Step 3: Cross multiply
    2,124,788.72x = 3,186,917.80 × 861,402.48
  4. Step 4: Simplify right side
    2,124,788.72x = 2,745,218,896,476.14
  5. Step 5: Solve for x
    x = 2,745,218,896,476.14/2,124,788.72
  6. Step 6: Final answer
    x = 1,291,996.17

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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.