Home / 722,202.61-996,627.35-399,905.79

Finding the Fourth Proportional to 722,202.61, 996,627.35 and 399,905.79

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Solution

The fourth proportional to 722,202.61, 996,627.35 and 399,905.79 is: 551,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,202.61 : 996,627.35 = 399,905.79 : x
  2. Step 2: Convert to fraction form
    722,202.61/996,627.35 = 399,905.79/x
  3. Step 3: Cross multiply
    722,202.61x = 996,627.35 × 399,905.79
  4. Step 4: Simplify right side
    722,202.61x = 398,557,047,240.42
  5. Step 5: Solve for x
    x = 398,557,047,240.42/722,202.61
  6. Step 6: Final answer
    x = 551,863.20

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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.