Home / 856,250.54-1,284,524.20-287,687.10

Finding the Fourth Proportional to 856,250.54, 1,284,524.20 and 287,687.10

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Solution

The fourth proportional to 856,250.54, 1,284,524.20 and 287,687.10 is: 431,580.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,250.54 : 1,284,524.20 = 287,687.10 : x
  2. Step 2: Convert to fraction form
    856,250.54/1,284,524.20 = 287,687.10/x
  3. Step 3: Cross multiply
    856,250.54x = 1,284,524.20 × 287,687.10
  4. Step 4: Simplify right side
    856,250.54x = 369,541,041,977.82
  5. Step 5: Solve for x
    x = 369,541,041,977.82/856,250.54
  6. Step 6: Final answer
    x = 431,580.51

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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.