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Finding the Fourth Proportional to 678,739.79, 936,635.24 and 376,953.23

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Solution

The fourth proportional to 678,739.79, 936,635.24 and 376,953.23 is: 520,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,739.79 : 936,635.24 = 376,953.23 : x
  2. Step 2: Convert to fraction form
    678,739.79/936,635.24 = 376,953.23/x
  3. Step 3: Cross multiply
    678,739.79x = 936,635.24 × 376,953.23
  4. Step 4: Simplify right side
    678,739.79x = 353,067,679,049.83
  5. Step 5: Solve for x
    x = 353,067,679,049.83/678,739.79
  6. Step 6: Final answer
    x = 520,181.20

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