Home / 726,718.60-1,090,725.90-426,824.20

Finding the Fourth Proportional to 726,718.60, 1,090,725.90 and 426,824.20

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Solution

The fourth proportional to 726,718.60, 1,090,725.90 and 426,824.20 is: 640,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,718.60 : 1,090,725.90 = 426,824.20 : x
  2. Step 2: Convert to fraction form
    726,718.60/1,090,725.90 = 426,824.20/x
  3. Step 3: Cross multiply
    726,718.60x = 1,090,725.90 × 426,824.20
  4. Step 4: Simplify right side
    726,718.60x = 465,548,209,686.78
  5. Step 5: Solve for x
    x = 465,548,209,686.78/726,718.60
  6. Step 6: Final answer
    x = 640,616.89

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1.5x scale

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.