Home / 1,912,661.78-2,639,378.49-1,053,061.43

Finding the Fourth Proportional to 1,912,661.78, 2,639,378.49 and 1,053,061.43

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Solution

The fourth proportional to 1,912,661.78, 2,639,378.49 and 1,053,061.43 is: 1,453,172.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912,661.78 : 2,639,378.49 = 1,053,061.43 : x
  2. Step 2: Convert to fraction form
    1,912,661.78/2,639,378.49 = 1,053,061.43/x
  3. Step 3: Cross multiply
    1,912,661.78x = 2,639,378.49 × 1,053,061.43
  4. Step 4: Simplify right side
    1,912,661.78x = 2,779,427,673,793.75
  5. Step 5: Solve for x
    x = 2,779,427,673,793.75/1,912,661.78
  6. Step 6: Final answer
    x = 1,453,172.59

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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.