Home / 667,054.22-1,000,278.77-287,795.61

Finding the Fourth Proportional to 667,054.22, 1,000,278.77 and 287,795.61

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Solution

The fourth proportional to 667,054.22, 1,000,278.77 and 287,795.61 is: 431,562.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,054.22 : 1,000,278.77 = 287,795.61 : x
  2. Step 2: Convert to fraction form
    667,054.22/1,000,278.77 = 287,795.61/x
  3. Step 3: Cross multiply
    667,054.22x = 1,000,278.77 × 287,795.61
  4. Step 4: Simplify right side
    667,054.22x = 287,875,837,343.22
  5. Step 5: Solve for x
    x = 287,875,837,343.22/667,054.22
  6. Step 6: Final answer
    x = 431,562.88

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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.