Home / 809,115.90-1,213,695.71-210,063.79

Finding the Fourth Proportional to 809,115.90, 1,213,695.71 and 210,063.79

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Solution

The fourth proportional to 809,115.90, 1,213,695.71 and 210,063.79 is: 315,101.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,115.90 : 1,213,695.71 = 210,063.79 : x
  2. Step 2: Convert to fraction form
    809,115.90/1,213,695.71 = 210,063.79/x
  3. Step 3: Cross multiply
    809,115.90x = 1,213,695.71 × 210,063.79
  4. Step 4: Simplify right side
    809,115.90x = 254,953,520,749.34
  5. Step 5: Solve for x
    x = 254,953,520,749.34/809,115.90
  6. Step 6: Final answer
    x = 315,101.36

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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.