Home / 856,682.68-1,284,974.34-257,630.80

Finding the Fourth Proportional to 856,682.68, 1,284,974.34 and 257,630.80

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Solution

The fourth proportional to 856,682.68, 1,284,974.34 and 257,630.80 is: 386,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,682.68 : 1,284,974.34 = 257,630.80 : x
  2. Step 2: Convert to fraction form
    856,682.68/1,284,974.34 = 257,630.80/x
  3. Step 3: Cross multiply
    856,682.68x = 1,284,974.34 × 257,630.80
  4. Step 4: Simplify right side
    856,682.68x = 331,048,967,193.67
  5. Step 5: Solve for x
    x = 331,048,967,193.67/856,682.68
  6. Step 6: Final answer
    x = 386,431.26

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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.