Home / 728,101.73-1,004,785.07-405,832.30

Finding the Fourth Proportional to 728,101.73, 1,004,785.07 and 405,832.30

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Solution

The fourth proportional to 728,101.73, 1,004,785.07 and 405,832.30 is: 560,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,101.73 : 1,004,785.07 = 405,832.30 : x
  2. Step 2: Convert to fraction form
    728,101.73/1,004,785.07 = 405,832.30/x
  3. Step 3: Cross multiply
    728,101.73x = 1,004,785.07 × 405,832.30
  4. Step 4: Simplify right side
    728,101.73x = 407,774,235,963.76
  5. Step 5: Solve for x
    x = 407,774,235,963.76/728,101.73
  6. Step 6: Final answer
    x = 560,051.18

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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.