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Finding the Fourth Proportional to 856,570, 1,284,934.20 and 225,487.12

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Solution

The fourth proportional to 856,570, 1,284,934.20 and 225,487.12 is: 338,251.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,570 : 1,284,934.20 = 225,487.12 : x
  2. Step 2: Convert to fraction form
    856,570/1,284,934.20 = 225,487.12/x
  3. Step 3: Cross multiply
    856,570x = 1,284,934.20 × 225,487.12
  4. Step 4: Simplify right side
    856,570x = 289,736,112,147.50
  5. Step 5: Solve for x
    x = 289,736,112,147.50/856,570
  6. Step 6: Final answer
    x = 338,251.53

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Double scale
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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.