Home / 1,591,121.28-2,190,201.72-1,386,817.20

Finding the Fourth Proportional to 1,591,121.28, 2,190,201.72 and 1,386,817.20

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Solution

The fourth proportional to 1,591,121.28, 2,190,201.72 and 1,386,817.20 is: 1,908,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591,121.28 : 2,190,201.72 = 1,386,817.20 : x
  2. Step 2: Convert to fraction form
    1,591,121.28/2,190,201.72 = 1,386,817.20/x
  3. Step 3: Cross multiply
    1,591,121.28x = 2,190,201.72 × 1,386,817.20
  4. Step 4: Simplify right side
    1,591,121.28x = 3,037,409,416,765.58
  5. Step 5: Solve for x
    x = 3,037,409,416,765.58/1,591,121.28
  6. Step 6: Final answer
    x = 1,908,974.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.