Home / 728,116.03-1,004,804.78-405,846.56

Finding the Fourth Proportional to 728,116.03, 1,004,804.78 and 405,846.56

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Solution

The fourth proportional to 728,116.03, 1,004,804.78 and 405,846.56 is: 560,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,116.03 : 1,004,804.78 = 405,846.56 : x
  2. Step 2: Convert to fraction form
    728,116.03/1,004,804.78 = 405,846.56/x
  3. Step 3: Cross multiply
    728,116.03x = 1,004,804.78 × 405,846.56
  4. Step 4: Simplify right side
    728,116.03x = 407,796,563,434.56
  5. Step 5: Solve for x
    x = 407,796,563,434.56/728,116.03
  6. Step 6: Final answer
    x = 560,070.85

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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.