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Finding the Fourth Proportional to 677,908.78, 935,509.44 and 376,102.78

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Solution

The fourth proportional to 677,908.78, 935,509.44 and 376,102.78 is: 519,019.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,908.78 : 935,509.44 = 376,102.78 : x
  2. Step 2: Convert to fraction form
    677,908.78/935,509.44 = 376,102.78/x
  3. Step 3: Cross multiply
    677,908.78x = 935,509.44 × 376,102.78
  4. Step 4: Simplify right side
    677,908.78x = 351,847,701,100.24
  5. Step 5: Solve for x
    x = 351,847,701,100.24/677,908.78
  6. Step 6: Final answer
    x = 519,019.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.