Home / 1,189,439.64-1,640,959.56-679,868.64

Finding the Fourth Proportional to 1,189,439.64, 1,640,959.56 and 679,868.64

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Solution

The fourth proportional to 1,189,439.64, 1,640,959.56 and 679,868.64 is: 937,951.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,439.64 : 1,640,959.56 = 679,868.64 : x
  2. Step 2: Convert to fraction form
    1,189,439.64/1,640,959.56 = 679,868.64/x
  3. Step 3: Cross multiply
    1,189,439.64x = 1,640,959.56 × 679,868.64
  4. Step 4: Simplify right side
    1,189,439.64x = 1,115,636,944,352.20
  5. Step 5: Solve for x
    x = 1,115,636,944,352.20/1,189,439.64
  6. Step 6: Final answer
    x = 937,951.71

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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.