Home / 391,457,485.80-587,167,566.30-132,647,322.60

Finding the Fourth Proportional to 391,457,485.80, 587,167,566.30 and 132,647,322.60

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Solution

The fourth proportional to 391,457,485.80, 587,167,566.30 and 132,647,322.60 is: 198,964,660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,457,485.80 : 587,167,566.30 = 132,647,322.60 : x
  2. Step 2: Convert to fraction form
    391,457,485.80/587,167,566.30 = 132,647,322.60/x
  3. Step 3: Cross multiply
    391,457,485.80x = 587,167,566.30 × 132,647,322.60
  4. Step 4: Simplify right side
    391,457,485.80x = 77,886,205,587,252,976
  5. Step 5: Solve for x
    x = 77,886,205,587,252,976/391,457,485.80
  6. Step 6: Final answer
    x = 198,964,660.05

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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.