Home / 691,277.38-1,036,916.20-217,999.78

Finding the Fourth Proportional to 691,277.38, 1,036,916.20 and 217,999.78

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Solution

The fourth proportional to 691,277.38, 1,036,916.20 and 217,999.78 is: 326,999.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,277.38 : 1,036,916.20 = 217,999.78 : x
  2. Step 2: Convert to fraction form
    691,277.38/1,036,916.20 = 217,999.78/x
  3. Step 3: Cross multiply
    691,277.38x = 1,036,916.20 × 217,999.78
  4. Step 4: Simplify right side
    691,277.38x = 226,047,503,478.44
  5. Step 5: Solve for x
    x = 226,047,503,478.44/691,277.38
  6. Step 6: Final answer
    x = 326,999.71

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1.5x scale

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.