Home / 1,391,501.45-2,087,172.21-826,471.58

Finding the Fourth Proportional to 1,391,501.45, 2,087,172.21 and 826,471.58

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Solution

The fourth proportional to 1,391,501.45, 2,087,172.21 and 826,471.58 is: 1,239,659.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,501.45 : 2,087,172.21 = 826,471.58 : x
  2. Step 2: Convert to fraction form
    1,391,501.45/2,087,172.21 = 826,471.58/x
  3. Step 3: Cross multiply
    1,391,501.45x = 2,087,172.21 × 826,471.58
  4. Step 4: Simplify right side
    1,391,501.45x = 1,724,988,503,694.93
  5. Step 5: Solve for x
    x = 1,724,988,503,694.93/1,391,501.45
  6. Step 6: Final answer
    x = 1,239,659.87

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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.