Home / 728,204.58-1,004,907.94-405,895.46

Finding the Fourth Proportional to 728,204.58, 1,004,907.94 and 405,895.46

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Solution

The fourth proportional to 728,204.58, 1,004,907.94 and 405,895.46 is: 560,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,204.58 : 1,004,907.94 = 405,895.46 : x
  2. Step 2: Convert to fraction form
    728,204.58/1,004,907.94 = 405,895.46/x
  3. Step 3: Cross multiply
    728,204.58x = 1,004,907.94 × 405,895.46
  4. Step 4: Simplify right side
    728,204.58x = 407,887,564,524.67
  5. Step 5: Solve for x
    x = 407,887,564,524.67/728,204.58
  6. Step 6: Final answer
    x = 560,127.71

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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.