Home / 728,166.04-1,004,873.70-405,896.44

Finding the Fourth Proportional to 728,166.04, 1,004,873.70 and 405,896.44

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Solution

The fourth proportional to 728,166.04, 1,004,873.70 and 405,896.44 is: 560,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,166.04 : 1,004,873.70 = 405,896.44 : x
  2. Step 2: Convert to fraction form
    728,166.04/1,004,873.70 = 405,896.44/x
  3. Step 3: Cross multiply
    728,166.04x = 1,004,873.70 × 405,896.44
  4. Step 4: Simplify right side
    728,166.04x = 407,874,657,479.63
  5. Step 5: Solve for x
    x = 407,874,657,479.63/728,166.04
  6. Step 6: Final answer
    x = 560,139.63

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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.