Home / 1,640,865.72-2,264,508.36-915,854.88

Finding the Fourth Proportional to 1,640,865.72, 2,264,508.36 and 915,854.88

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Solution

The fourth proportional to 1,640,865.72, 2,264,508.36 and 915,854.88 is: 1,263,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,865.72 : 2,264,508.36 = 915,854.88 : x
  2. Step 2: Convert to fraction form
    1,640,865.72/2,264,508.36 = 915,854.88/x
  3. Step 3: Cross multiply
    1,640,865.72x = 2,264,508.36 × 915,854.88
  4. Step 4: Simplify right side
    1,640,865.72x = 2,073,961,032,306.80
  5. Step 5: Solve for x
    x = 2,073,961,032,306.80/1,640,865.72
  6. Step 6: Final answer
    x = 1,263,943.18

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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.