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Finding the Fourth Proportional to 486,664.79, 671,499.87 and 271,771.79

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Solution

The fourth proportional to 486,664.79, 671,499.87 and 271,771.79 is: 374,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,664.79 : 671,499.87 = 271,771.79 : x
  2. Step 2: Convert to fraction form
    486,664.79/671,499.87 = 271,771.79/x
  3. Step 3: Cross multiply
    486,664.79x = 671,499.87 × 271,771.79
  4. Step 4: Simplify right side
    486,664.79x = 182,494,718,297.17
  5. Step 5: Solve for x
    x = 182,494,718,297.17/486,664.79
  6. Step 6: Final answer
    x = 374,990.60

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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.