Home / 426,410.74-639,616.02-126,895.60

Finding the Fourth Proportional to 426,410.74, 639,616.02 and 126,895.60

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Solution

The fourth proportional to 426,410.74, 639,616.02 and 126,895.60 is: 190,343.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,410.74 : 639,616.02 = 126,895.60 : x
  2. Step 2: Convert to fraction form
    426,410.74/639,616.02 = 126,895.60/x
  3. Step 3: Cross multiply
    426,410.74x = 639,616.02 × 126,895.60
  4. Step 4: Simplify right side
    426,410.74x = 81,164,458,627.51
  5. Step 5: Solve for x
    x = 81,164,458,627.51/426,410.74
  6. Step 6: Final answer
    x = 190,343.37

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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.