Home / 1,438,566.20-2,159,015.70-1,391,910.20

Finding the Fourth Proportional to 1,438,566.20, 2,159,015.70 and 1,391,910.20

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Solution

The fourth proportional to 1,438,566.20, 2,159,015.70 and 1,391,910.20 is: 2,088,993.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,566.20 : 2,159,015.70 = 1,391,910.20 : x
  2. Step 2: Convert to fraction form
    1,438,566.20/2,159,015.70 = 1,391,910.20/x
  3. Step 3: Cross multiply
    1,438,566.20x = 2,159,015.70 × 1,391,910.20
  4. Step 4: Simplify right side
    1,438,566.20x = 3,005,155,974,790.14
  5. Step 5: Solve for x
    x = 3,005,155,974,790.14/1,438,566.20
  6. Step 6: Final answer
    x = 2,088,993.87

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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.