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Finding the Fourth Proportional to 615,138.88, 922,265.36 and 377,991.56

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Solution

The fourth proportional to 615,138.88, 922,265.36 and 377,991.56 is: 566,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,138.88 : 922,265.36 = 377,991.56 : x
  2. Step 2: Convert to fraction form
    615,138.88/922,265.36 = 377,991.56/x
  3. Step 3: Cross multiply
    615,138.88x = 922,265.36 × 377,991.56
  4. Step 4: Simplify right side
    615,138.88x = 348,608,522,160.36
  5. Step 5: Solve for x
    x = 348,608,522,160.36/615,138.88
  6. Step 6: Final answer
    x = 566,715.15

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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.