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Finding the Fourth Proportional to 520,228.06, 717,963.96 and 326,667.64

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Solution

The fourth proportional to 520,228.06, 717,963.96 and 326,667.64 is: 450,832.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,228.06 : 717,963.96 = 326,667.64 : x
  2. Step 2: Convert to fraction form
    520,228.06/717,963.96 = 326,667.64/x
  3. Step 3: Cross multiply
    520,228.06x = 717,963.96 × 326,667.64
  4. Step 4: Simplify right side
    520,228.06x = 234,535,592,418.25
  5. Step 5: Solve for x
    x = 234,535,592,418.25/520,228.06
  6. Step 6: Final answer
    x = 450,832.26

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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.