Home / 428,514.21-642,679.05-175,546.65

Finding the Fourth Proportional to 428,514.21, 642,679.05 and 175,546.65

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Solution

The fourth proportional to 428,514.21, 642,679.05 and 175,546.65 is: 263,282.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,514.21 : 642,679.05 = 175,546.65 : x
  2. Step 2: Convert to fraction form
    428,514.21/642,679.05 = 175,546.65/x
  3. Step 3: Cross multiply
    428,514.21x = 642,679.05 × 175,546.65
  4. Step 4: Simplify right side
    428,514.21x = 112,820,154,252.68
  5. Step 5: Solve for x
    x = 112,820,154,252.68/428,514.21
  6. Step 6: Final answer
    x = 263,282.18

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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.