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Finding the Fourth Proportional to 624,463.90, 861,742.87 and 348,814.42

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Solution

The fourth proportional to 624,463.90, 861,742.87 and 348,814.42 is: 481,354.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,463.90 : 861,742.87 = 348,814.42 : x
  2. Step 2: Convert to fraction form
    624,463.90/861,742.87 = 348,814.42/x
  3. Step 3: Cross multiply
    624,463.90x = 861,742.87 × 348,814.42
  4. Step 4: Simplify right side
    624,463.90x = 300,588,336,361.79
  5. Step 5: Solve for x
    x = 300,588,336,361.79/624,463.90
  6. Step 6: Final answer
    x = 481,354.23

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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.