Home / 563,286.72-777,334.78-305,170.24

Finding the Fourth Proportional to 563,286.72, 777,334.78 and 305,170.24

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Solution

The fourth proportional to 563,286.72, 777,334.78 and 305,170.24 is: 421,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,286.72 : 777,334.78 = 305,170.24 : x
  2. Step 2: Convert to fraction form
    563,286.72/777,334.78 = 305,170.24/x
  3. Step 3: Cross multiply
    563,286.72x = 777,334.78 × 305,170.24
  4. Step 4: Simplify right side
    563,286.72x = 237,219,441,372.95
  5. Step 5: Solve for x
    x = 237,219,441,372.95/563,286.72
  6. Step 6: Final answer
    x = 421,134.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.