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Finding the Fourth Proportional to 722,958.21, 997,682.31 and 400,716.72

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Solution

The fourth proportional to 722,958.21, 997,682.31 and 400,716.72 is: 552,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,958.21 : 997,682.31 = 400,716.72 : x
  2. Step 2: Convert to fraction form
    722,958.21/997,682.31 = 400,716.72/x
  3. Step 3: Cross multiply
    722,958.21x = 997,682.31 × 400,716.72
  4. Step 4: Simplify right side
    722,958.21x = 399,787,982,865.22
  5. Step 5: Solve for x
    x = 399,787,982,865.22/722,958.21
  6. Step 6: Final answer
    x = 552,989.06

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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.