Home / 728,578.80-1,005,439.77-401,884.52

Finding the Fourth Proportional to 728,578.80, 1,005,439.77 and 401,884.52

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Solution

The fourth proportional to 728,578.80, 1,005,439.77 and 401,884.52 is: 554,601.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,578.80 : 1,005,439.77 = 401,884.52 : x
  2. Step 2: Convert to fraction form
    728,578.80/1,005,439.77 = 401,884.52/x
  3. Step 3: Cross multiply
    728,578.80x = 1,005,439.77 × 401,884.52
  4. Step 4: Simplify right side
    728,578.80x = 404,070,674,328.16
  5. Step 5: Solve for x
    x = 404,070,674,328.16/728,578.80
  6. Step 6: Final answer
    x = 554,601.20

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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.