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Finding the Fourth Proportional to 587,388.76, 810,646.03 and 329,261.56

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Solution

The fourth proportional to 587,388.76, 810,646.03 and 329,261.56 is: 454,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,388.76 : 810,646.03 = 329,261.56 : x
  2. Step 2: Convert to fraction form
    587,388.76/810,646.03 = 329,261.56/x
  3. Step 3: Cross multiply
    587,388.76x = 810,646.03 × 329,261.56
  4. Step 4: Simplify right side
    587,388.76x = 266,914,572,978.47
  5. Step 5: Solve for x
    x = 266,914,572,978.47/587,388.76
  6. Step 6: Final answer
    x = 454,408.71

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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.