Home / 728,101.98-1,004,785.40-405,832.54

Finding the Fourth Proportional to 728,101.98, 1,004,785.40 and 405,832.54

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Solution

The fourth proportional to 728,101.98, 1,004,785.40 and 405,832.54 is: 560,051.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,101.98 : 1,004,785.40 = 405,832.54 : x
  2. Step 2: Convert to fraction form
    728,101.98/1,004,785.40 = 405,832.54/x
  3. Step 3: Cross multiply
    728,101.98x = 1,004,785.40 × 405,832.54
  4. Step 4: Simplify right side
    728,101.98x = 407,774,611,036.92
  5. Step 5: Solve for x
    x = 407,774,611,036.92/728,101.98
  6. Step 6: Final answer
    x = 560,051.51

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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.