Home / 426,829.97-640,314.43-199,353.06

Finding the Fourth Proportional to 426,829.97, 640,314.43 and 199,353.06

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Solution

The fourth proportional to 426,829.97, 640,314.43 and 199,353.06 is: 299,062.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,829.97 : 640,314.43 = 199,353.06 : x
  2. Step 2: Convert to fraction form
    426,829.97/640,314.43 = 199,353.06/x
  3. Step 3: Cross multiply
    426,829.97x = 640,314.43 × 199,353.06
  4. Step 4: Simplify right side
    426,829.97x = 127,648,639,880.25
  5. Step 5: Solve for x
    x = 127,648,639,880.25/426,829.97
  6. Step 6: Final answer
    x = 299,062.04

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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.