Home / 1,247,780.09-1,721,517.71-1,017,940.06

Finding the Fourth Proportional to 1,247,780.09, 1,721,517.71 and 1,017,940.06

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Solution

The fourth proportional to 1,247,780.09, 1,721,517.71 and 1,017,940.06 is: 1,404,415.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,780.09 : 1,721,517.71 = 1,017,940.06 : x
  2. Step 2: Convert to fraction form
    1,247,780.09/1,721,517.71 = 1,017,940.06/x
  3. Step 3: Cross multiply
    1,247,780.09x = 1,721,517.71 × 1,017,940.06
  4. Step 4: Simplify right side
    1,247,780.09x = 1,752,401,838,070.66
  5. Step 5: Solve for x
    x = 1,752,401,838,070.66/1,247,780.09
  6. Step 6: Final answer
    x = 1,404,415.61

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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.