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Finding the Fourth Proportional to 722,188.52, 996,592.74 and 399,873

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Solution

The fourth proportional to 722,188.52, 996,592.74 and 399,873 is: 551,809.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,188.52 : 996,592.74 = 399,873 : x
  2. Step 2: Convert to fraction form
    722,188.52/996,592.74 = 399,873/x
  3. Step 3: Cross multiply
    722,188.52x = 996,592.74 × 399,873
  4. Step 4: Simplify right side
    722,188.52x = 398,510,528,722.02
  5. Step 5: Solve for x
    x = 398,510,528,722.02/722,188.52
  6. Step 6: Final answer
    x = 551,809.56

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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.