Home / 1,440,043.20-2,155,399.20-1,020,139.20

Finding the Fourth Proportional to 1,440,043.20, 2,155,399.20 and 1,020,139.20

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Solution

The fourth proportional to 1,440,043.20, 2,155,399.20 and 1,020,139.20 is: 1,526,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,043.20 : 2,155,399.20 = 1,020,139.20 : x
  2. Step 2: Convert to fraction form
    1,440,043.20/2,155,399.20 = 1,020,139.20/x
  3. Step 3: Cross multiply
    1,440,043.20x = 2,155,399.20 × 1,020,139.20
  4. Step 4: Simplify right side
    1,440,043.20x = 2,198,807,215,568.64
  5. Step 5: Solve for x
    x = 2,198,807,215,568.64/1,440,043.20
  6. Step 6: Final answer
    x = 1,526,903.65

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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.