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Finding the Fourth Proportional to 520,709.22, 718,373.40 and 327,003

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Solution

The fourth proportional to 520,709.22, 718,373.40 and 327,003 is: 451,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,709.22 : 718,373.40 = 327,003 : x
  2. Step 2: Convert to fraction form
    520,709.22/718,373.40 = 327,003/x
  3. Step 3: Cross multiply
    520,709.22x = 718,373.40 × 327,003
  4. Step 4: Simplify right side
    520,709.22x = 234,910,256,920.20
  5. Step 5: Solve for x
    x = 234,910,256,920.20/520,709.22
  6. Step 6: Final answer
    x = 451,135.20

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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.