Home / 687,657.87-1,030,952.21-327,644.19

Finding the Fourth Proportional to 687,657.87, 1,030,952.21 and 327,644.19

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Solution

The fourth proportional to 687,657.87, 1,030,952.21 and 327,644.19 is: 491,211.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,657.87 : 1,030,952.21 = 327,644.19 : x
  2. Step 2: Convert to fraction form
    687,657.87/1,030,952.21 = 327,644.19/x
  3. Step 3: Cross multiply
    687,657.87x = 1,030,952.21 × 327,644.19
  4. Step 4: Simplify right side
    687,657.87x = 337,785,500,135.94
  5. Step 5: Solve for x
    x = 337,785,500,135.94/687,657.87
  6. Step 6: Final answer
    x = 491,211.57

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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.