Home / 767,383.78-1,151,180.79-261,809.14

Finding the Fourth Proportional to 767,383.78, 1,151,180.79 and 261,809.14

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Solution

The fourth proportional to 767,383.78, 1,151,180.79 and 261,809.14 is: 392,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,383.78 : 1,151,180.79 = 261,809.14 : x
  2. Step 2: Convert to fraction form
    767,383.78/1,151,180.79 = 261,809.14/x
  3. Step 3: Cross multiply
    767,383.78x = 1,151,180.79 × 261,809.14
  4. Step 4: Simplify right side
    767,383.78x = 301,389,652,614.42
  5. Step 5: Solve for x
    x = 301,389,652,614.42/767,383.78
  6. Step 6: Final answer
    x = 392,749.57

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Half scale
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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.