Home / 1,391,650.20-2,087,183.70-682,187.40

Finding the Fourth Proportional to 1,391,650.20, 2,087,183.70 and 682,187.40

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Solution

The fourth proportional to 1,391,650.20, 2,087,183.70 and 682,187.40 is: 1,023,138.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,650.20 : 2,087,183.70 = 682,187.40 : x
  2. Step 2: Convert to fraction form
    1,391,650.20/2,087,183.70 = 682,187.40/x
  3. Step 3: Cross multiply
    1,391,650.20x = 2,087,183.70 × 682,187.40
  4. Step 4: Simplify right side
    1,391,650.20x = 1,423,850,421,625.38
  5. Step 5: Solve for x
    x = 1,423,850,421,625.38/1,391,650.20
  6. Step 6: Final answer
    x = 1,023,138.16

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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.