Home / 1,221,512.68-1,685,689.51-677,648.47

Finding the Fourth Proportional to 1,221,512.68, 1,685,689.51 and 677,648.47

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Solution

The fourth proportional to 1,221,512.68, 1,685,689.51 and 677,648.47 is: 935,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,512.68 : 1,685,689.51 = 677,648.47 : x
  2. Step 2: Convert to fraction form
    1,221,512.68/1,685,689.51 = 677,648.47/x
  3. Step 3: Cross multiply
    1,221,512.68x = 1,685,689.51 × 677,648.47
  4. Step 4: Simplify right side
    1,221,512.68x = 1,142,304,917,346.55
  5. Step 5: Solve for x
    x = 1,142,304,917,346.55/1,221,512.68
  6. Step 6: Final answer
    x = 935,156.00

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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.