Home / 1,121,190.30-1,681,785.45-447,375.60

Finding the Fourth Proportional to 1,121,190.30, 1,681,785.45 and 447,375.60

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Solution

The fourth proportional to 1,121,190.30, 1,681,785.45 and 447,375.60 is: 671,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,190.30 : 1,681,785.45 = 447,375.60 : x
  2. Step 2: Convert to fraction form
    1,121,190.30/1,681,785.45 = 447,375.60/x
  3. Step 3: Cross multiply
    1,121,190.30x = 1,681,785.45 × 447,375.60
  4. Step 4: Simplify right side
    1,121,190.30x = 752,389,774,765.02
  5. Step 5: Solve for x
    x = 752,389,774,765.02/1,121,190.30
  6. Step 6: Final answer
    x = 671,063.40

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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.