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Finding the Fourth Proportional to 605,715.14, 907,568.30 and 368,339.78

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Solution

The fourth proportional to 605,715.14, 907,568.30 and 368,339.78 is: 551,898.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,715.14 : 907,568.30 = 368,339.78 : x
  2. Step 2: Convert to fraction form
    605,715.14/907,568.30 = 368,339.78/x
  3. Step 3: Cross multiply
    605,715.14x = 907,568.30 × 368,339.78
  4. Step 4: Simplify right side
    605,715.14x = 334,293,507,956.97
  5. Step 5: Solve for x
    x = 334,293,507,956.97/605,715.14
  6. Step 6: Final answer
    x = 551,898.88

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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.