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Finding the Fourth Proportional to 722,174.49, 996,588.54 and 399,877.65

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Solution

The fourth proportional to 722,174.49, 996,588.54 and 399,877.65 is: 551,824.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,174.49 : 996,588.54 = 399,877.65 : x
  2. Step 2: Convert to fraction form
    722,174.49/996,588.54 = 399,877.65/x
  3. Step 3: Cross multiply
    722,174.49x = 996,588.54 × 399,877.65
  4. Step 4: Simplify right side
    722,174.49x = 398,513,483,392.13
  5. Step 5: Solve for x
    x = 398,513,483,392.13/722,174.49
  6. Step 6: Final answer
    x = 551,824.37

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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.