Home / 728,644.21-1,005,529.93-401,949.83

Finding the Fourth Proportional to 728,644.21, 1,005,529.93 and 401,949.83

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Solution

The fourth proportional to 728,644.21, 1,005,529.93 and 401,949.83 is: 554,691.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,644.21 : 1,005,529.93 = 401,949.83 : x
  2. Step 2: Convert to fraction form
    728,644.21/1,005,529.93 = 401,949.83/x
  3. Step 3: Cross multiply
    728,644.21x = 1,005,529.93 × 401,949.83
  4. Step 4: Simplify right side
    728,644.21x = 404,172,585,932.36
  5. Step 5: Solve for x
    x = 404,172,585,932.36/728,644.21
  6. Step 6: Final answer
    x = 554,691.28

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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.