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Finding the Fourth Proportional to 426,361.57, 639,317.51 and 377,797.87

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Solution

The fourth proportional to 426,361.57, 639,317.51 and 377,797.87 is: 566,497.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,361.57 : 639,317.51 = 377,797.87 : x
  2. Step 2: Convert to fraction form
    426,361.57/639,317.51 = 377,797.87/x
  3. Step 3: Cross multiply
    426,361.57x = 639,317.51 × 377,797.87
  4. Step 4: Simplify right side
    426,361.57x = 241,532,793,858.60
  5. Step 5: Solve for x
    x = 241,532,793,858.60/426,361.57
  6. Step 6: Final answer
    x = 566,497.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.