Home / 856,406.25-1,284,559.97-257,354.55

Finding the Fourth Proportional to 856,406.25, 1,284,559.97 and 257,354.55

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Solution

The fourth proportional to 856,406.25, 1,284,559.97 and 257,354.55 is: 386,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,406.25 : 1,284,559.97 = 257,354.55 : x
  2. Step 2: Convert to fraction form
    856,406.25/1,284,559.97 = 257,354.55/x
  3. Step 3: Cross multiply
    856,406.25x = 1,284,559.97 × 257,354.55
  4. Step 4: Simplify right side
    856,406.25x = 330,587,351,740.59
  5. Step 5: Solve for x
    x = 330,587,351,740.59/856,406.25
  6. Step 6: Final answer
    x = 386,016.98

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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.