Home / 837,431.75-1,256,148.30-206,345.63

Finding the Fourth Proportional to 837,431.75, 1,256,148.30 and 206,345.63

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Solution

The fourth proportional to 837,431.75, 1,256,148.30 and 206,345.63 is: 309,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,431.75 : 1,256,148.30 = 206,345.63 : x
  2. Step 2: Convert to fraction form
    837,431.75/1,256,148.30 = 206,345.63/x
  3. Step 3: Cross multiply
    837,431.75x = 1,256,148.30 × 206,345.63
  4. Step 4: Simplify right side
    837,431.75x = 259,200,716,251.10
  5. Step 5: Solve for x
    x = 259,200,716,251.10/837,431.75
  6. Step 6: Final answer
    x = 309,518.62

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Double scale
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Similar ratio
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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.