Home / 458,278.39-687,195.37-268,800.65

Finding the Fourth Proportional to 458,278.39, 687,195.37 and 268,800.65

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Solution

The fourth proportional to 458,278.39, 687,195.37 and 268,800.65 is: 403,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,278.39 : 687,195.37 = 268,800.65 : x
  2. Step 2: Convert to fraction form
    458,278.39/687,195.37 = 268,800.65/x
  3. Step 3: Cross multiply
    458,278.39x = 687,195.37 × 268,800.65
  4. Step 4: Simplify right side
    458,278.39x = 184,718,560,788.99
  5. Step 5: Solve for x
    x = 184,718,560,788.99/458,278.39
  6. Step 6: Final answer
    x = 403,070.63

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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.