Home / 876,772.26-1,209,947.49-489,585.78

Finding the Fourth Proportional to 876,772.26, 1,209,947.49 and 489,585.78

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Solution

The fourth proportional to 876,772.26, 1,209,947.49 and 489,585.78 is: 675,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,772.26 : 1,209,947.49 = 489,585.78 : x
  2. Step 2: Convert to fraction form
    876,772.26/1,209,947.49 = 489,585.78/x
  3. Step 3: Cross multiply
    876,772.26x = 1,209,947.49 × 489,585.78
  4. Step 4: Simplify right side
    876,772.26x = 592,373,085,650.69
  5. Step 5: Solve for x
    x = 592,373,085,650.69/876,772.26
  6. Step 6: Final answer
    x = 675,629.37

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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.