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Finding the Fourth Proportional to 722,174.28, 996,588.34 and 399,877.44

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Solution

The fourth proportional to 722,174.28, 996,588.34 and 399,877.44 is: 551,824.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,174.28 : 996,588.34 = 399,877.44 : x
  2. Step 2: Convert to fraction form
    722,174.28/996,588.34 = 399,877.44/x
  3. Step 3: Cross multiply
    722,174.28x = 996,588.34 × 399,877.44
  4. Step 4: Simplify right side
    722,174.28x = 398,513,194,133.05
  5. Step 5: Solve for x
    x = 398,513,194,133.05/722,174.28
  6. Step 6: Final answer
    x = 551,824.13

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1.5x scale

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.