Home / 1,947,805.80-2,921,708.70-1,275,959.40

Finding the Fourth Proportional to 1,947,805.80, 2,921,708.70 and 1,275,959.40

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Solution

The fourth proportional to 1,947,805.80, 2,921,708.70 and 1,275,959.40 is: 1,913,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947,805.80 : 2,921,708.70 = 1,275,959.40 : x
  2. Step 2: Convert to fraction form
    1,947,805.80/2,921,708.70 = 1,275,959.40/x
  3. Step 3: Cross multiply
    1,947,805.80x = 2,921,708.70 × 1,275,959.40
  4. Step 4: Simplify right side
    1,947,805.80x = 3,727,981,679,826.78
  5. Step 5: Solve for x
    x = 3,727,981,679,826.78/1,947,805.80
  6. Step 6: Final answer
    x = 1,913,939.10

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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.