Home / 728,545.04-1,005,405-401,895.44

Finding the Fourth Proportional to 728,545.04, 1,005,405 and 401,895.44

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Solution

The fourth proportional to 728,545.04, 1,005,405 and 401,895.44 is: 554,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,545.04 : 1,005,405 = 401,895.44 : x
  2. Step 2: Convert to fraction form
    728,545.04/1,005,405 = 401,895.44/x
  3. Step 3: Cross multiply
    728,545.04x = 1,005,405 × 401,895.44
  4. Step 4: Simplify right side
    728,545.04x = 404,067,684,853.20
  5. Step 5: Solve for x
    x = 404,067,684,853.20/728,545.04
  6. Step 6: Final answer
    x = 554,622.79

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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.