Home / 856,344.72-1,284,207.03-287,555.70

Finding the Fourth Proportional to 856,344.72, 1,284,207.03 and 287,555.70

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Solution

The fourth proportional to 856,344.72, 1,284,207.03 and 287,555.70 is: 431,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,344.72 : 1,284,207.03 = 287,555.70 : x
  2. Step 2: Convert to fraction form
    856,344.72/1,284,207.03 = 287,555.70/x
  3. Step 3: Cross multiply
    856,344.72x = 1,284,207.03 × 287,555.70
  4. Step 4: Simplify right side
    856,344.72x = 369,281,051,456.57
  5. Step 5: Solve for x
    x = 369,281,051,456.57/856,344.72
  6. Step 6: Final answer
    x = 431,229.44

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Double scale
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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.