Home / 728,114.97-1,004,803.32-405,845.50

Finding the Fourth Proportional to 728,114.97, 1,004,803.32 and 405,845.50

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Solution

The fourth proportional to 728,114.97, 1,004,803.32 and 405,845.50 is: 560,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,114.97 : 1,004,803.32 = 405,845.50 : x
  2. Step 2: Convert to fraction form
    728,114.97/1,004,803.32 = 405,845.50/x
  3. Step 3: Cross multiply
    728,114.97x = 1,004,803.32 × 405,845.50
  4. Step 4: Simplify right side
    728,114.97x = 407,794,898,753.82
  5. Step 5: Solve for x
    x = 407,794,898,753.82/728,114.97
  6. Step 6: Final answer
    x = 560,069.38

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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.