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Finding the Fourth Proportional to 436,349.43, 601,476.03 and 399,739.05

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Solution

The fourth proportional to 436,349.43, 601,476.03 and 399,739.05 is: 551,011.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,349.43 : 601,476.03 = 399,739.05 : x
  2. Step 2: Convert to fraction form
    436,349.43/601,476.03 = 399,739.05/x
  3. Step 3: Cross multiply
    436,349.43x = 601,476.03 × 399,739.05
  4. Step 4: Simplify right side
    436,349.43x = 240,433,456,829.97
  5. Step 5: Solve for x
    x = 240,433,456,829.97/436,349.43
  6. Step 6: Final answer
    x = 551,011.28

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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.