Home / 728,175.44-1,004,916.64-405,887.84

Finding the Fourth Proportional to 728,175.44, 1,004,916.64 and 405,887.84

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Solution

The fourth proportional to 728,175.44, 1,004,916.64 and 405,887.84 is: 560,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,175.44 : 1,004,916.64 = 405,887.84 : x
  2. Step 2: Convert to fraction form
    728,175.44/1,004,916.64 = 405,887.84/x
  3. Step 3: Cross multiply
    728,175.44x = 1,004,916.64 × 405,887.84
  4. Step 4: Simplify right side
    728,175.44x = 407,883,444,389.66
  5. Step 5: Solve for x
    x = 407,883,444,389.66/728,175.44
  6. Step 6: Final answer
    x = 560,144.47

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1.5x scale

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.