Home / 1,491,379.20-2,058,113.28-812,309.76

Finding the Fourth Proportional to 1,491,379.20, 2,058,113.28 and 812,309.76

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Solution

The fourth proportional to 1,491,379.20, 2,058,113.28 and 812,309.76 is: 1,120,992.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,379.20 : 2,058,113.28 = 812,309.76 : x
  2. Step 2: Convert to fraction form
    1,491,379.20/2,058,113.28 = 812,309.76/x
  3. Step 3: Cross multiply
    1,491,379.20x = 2,058,113.28 × 812,309.76
  4. Step 4: Simplify right side
    1,491,379.20x = 1,671,825,504,529.61
  5. Step 5: Solve for x
    x = 1,671,825,504,529.61/1,491,379.20
  6. Step 6: Final answer
    x = 1,120,992.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.