Home / 1,954,139.20-2,931,500.40-691,867.60

Finding the Fourth Proportional to 1,954,139.20, 2,931,500.40 and 691,867.60

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Solution

The fourth proportional to 1,954,139.20, 2,931,500.40 and 691,867.60 is: 1,037,904.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954,139.20 : 2,931,500.40 = 691,867.60 : x
  2. Step 2: Convert to fraction form
    1,954,139.20/2,931,500.40 = 691,867.60/x
  3. Step 3: Cross multiply
    1,954,139.20x = 2,931,500.40 × 691,867.60
  4. Step 4: Simplify right side
    1,954,139.20x = 2,028,210,146,147.04
  5. Step 5: Solve for x
    x = 2,028,210,146,147.04/1,954,139.20
  6. Step 6: Final answer
    x = 1,037,904.64

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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.