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Finding the Fourth Proportional to 677,781.12, 935,449.92 and 376,072.32

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Solution

The fourth proportional to 677,781.12, 935,449.92 and 376,072.32 is: 519,041.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,781.12 : 935,449.92 = 376,072.32 : x
  2. Step 2: Convert to fraction form
    677,781.12/935,449.92 = 376,072.32/x
  3. Step 3: Cross multiply
    677,781.12x = 935,449.92 × 376,072.32
  4. Step 4: Simplify right side
    677,781.12x = 351,796,821,658.21
  5. Step 5: Solve for x
    x = 351,796,821,658.21/677,781.12
  6. Step 6: Final answer
    x = 519,041.93

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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.