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Finding the Fourth Proportional to 623,980.22, 861,019.89 and 352,052.42

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Solution

The fourth proportional to 623,980.22, 861,019.89 and 352,052.42 is: 485,791.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,980.22 : 861,019.89 = 352,052.42 : x
  2. Step 2: Convert to fraction form
    623,980.22/861,019.89 = 352,052.42/x
  3. Step 3: Cross multiply
    623,980.22x = 861,019.89 × 352,052.42
  4. Step 4: Simplify right side
    623,980.22x = 303,124,135,942.63
  5. Step 5: Solve for x
    x = 303,124,135,942.63/623,980.22
  6. Step 6: Final answer
    x = 485,791.26

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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.