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Finding the Fourth Proportional to 615,610.35, 923,707.76 and 426,361.95

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Solution

The fourth proportional to 615,610.35, 923,707.76 and 426,361.95 is: 639,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,610.35 : 923,707.76 = 426,361.95 : x
  2. Step 2: Convert to fraction form
    615,610.35/923,707.76 = 426,361.95/x
  3. Step 3: Cross multiply
    615,610.35x = 923,707.76 × 426,361.95
  4. Step 4: Simplify right side
    615,610.35x = 393,833,839,651.92
  5. Step 5: Solve for x
    x = 393,833,839,651.92/615,610.35
  6. Step 6: Final answer
    x = 639,745.32

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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.