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Finding the Fourth Proportional to 690,241.79, 952,524.57 and 399,892.94

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Solution

The fourth proportional to 690,241.79, 952,524.57 and 399,892.94 is: 551,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,241.79 : 952,524.57 = 399,892.94 : x
  2. Step 2: Convert to fraction form
    690,241.79/952,524.57 = 399,892.94/x
  3. Step 3: Cross multiply
    690,241.79x = 952,524.57 × 399,892.94
  4. Step 4: Simplify right side
    690,241.79x = 380,907,845,956.91
  5. Step 5: Solve for x
    x = 380,907,845,956.91/690,241.79
  6. Step 6: Final answer
    x = 551,846.98

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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.