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Finding the Fourth Proportional to 512,607.64, 769,076 and 246,387.48

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Solution

The fourth proportional to 512,607.64, 769,076 and 246,387.48 is: 369,660.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,607.64 : 769,076 = 246,387.48 : x
  2. Step 2: Convert to fraction form
    512,607.64/769,076 = 246,387.48/x
  3. Step 3: Cross multiply
    512,607.64x = 769,076 × 246,387.48
  4. Step 4: Simplify right side
    512,607.64x = 189,490,697,568.48
  5. Step 5: Solve for x
    x = 189,490,697,568.48/512,607.64
  6. Step 6: Final answer
    x = 369,660.31

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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.