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Finding the Fourth Proportional to 491,555.79, 677,997.41 and 328,130.01

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Solution

The fourth proportional to 491,555.79, 677,997.41 and 328,130.01 is: 452,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,555.79 : 677,997.41 = 328,130.01 : x
  2. Step 2: Convert to fraction form
    491,555.79/677,997.41 = 328,130.01/x
  3. Step 3: Cross multiply
    491,555.79x = 677,997.41 × 328,130.01
  4. Step 4: Simplify right side
    491,555.79x = 222,471,295,282.62
  5. Step 5: Solve for x
    x = 222,471,295,282.62/491,555.79
  6. Step 6: Final answer
    x = 452,586.05

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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.