Home / 674,538.45-931,268.53-420,234.09

Finding the Fourth Proportional to 674,538.45, 931,268.53 and 420,234.09

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Solution

The fourth proportional to 674,538.45, 931,268.53 and 420,234.09 is: 580,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,538.45 : 931,268.53 = 420,234.09 : x
  2. Step 2: Convert to fraction form
    674,538.45/931,268.53 = 420,234.09/x
  3. Step 3: Cross multiply
    674,538.45x = 931,268.53 × 420,234.09
  4. Step 4: Simplify right side
    674,538.45x = 391,350,780,283.22
  5. Step 5: Solve for x
    x = 391,350,780,283.22/674,538.45
  6. Step 6: Final answer
    x = 580,175.65

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1.5x scale

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.