Home / 1,386,410.82-2,079,861.93-628,221.66

Finding the Fourth Proportional to 1,386,410.82, 2,079,861.93 and 628,221.66

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Solution

The fourth proportional to 1,386,410.82, 2,079,861.93 and 628,221.66 is: 942,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,410.82 : 2,079,861.93 = 628,221.66 : x
  2. Step 2: Convert to fraction form
    1,386,410.82/2,079,861.93 = 628,221.66/x
  3. Step 3: Cross multiply
    1,386,410.82x = 2,079,861.93 × 628,221.66
  4. Step 4: Simplify right side
    1,386,410.82x = 1,306,614,314,235.40
  5. Step 5: Solve for x
    x = 1,306,614,314,235.40/1,386,410.82
  6. Step 6: Final answer
    x = 942,443.82

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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.