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Finding the Fourth Proportional to 614,513.88, 847,548.43 and 399,722.54

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Solution

The fourth proportional to 614,513.88, 847,548.43 and 399,722.54 is: 551,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,513.88 : 847,548.43 = 399,722.54 : x
  2. Step 2: Convert to fraction form
    614,513.88/847,548.43 = 399,722.54/x
  3. Step 3: Cross multiply
    614,513.88x = 847,548.43 × 399,722.54
  4. Step 4: Simplify right side
    614,513.88x = 338,784,205,975.56
  5. Step 5: Solve for x
    x = 338,784,205,975.56/614,513.88
  6. Step 6: Final answer
    x = 551,304.40

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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.