Home / 728,826.66-1,005,419.79-487,185.03

Finding the Fourth Proportional to 728,826.66, 1,005,419.79 and 487,185.03

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Solution

The fourth proportional to 728,826.66, 1,005,419.79 and 487,185.03 is: 672,074.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,826.66 : 1,005,419.79 = 487,185.03 : x
  2. Step 2: Convert to fraction form
    728,826.66/1,005,419.79 = 487,185.03/x
  3. Step 3: Cross multiply
    728,826.66x = 1,005,419.79 × 487,185.03
  4. Step 4: Simplify right side
    728,826.66x = 489,825,470,553.74
  5. Step 5: Solve for x
    x = 489,825,470,553.74/728,826.66
  6. Step 6: Final answer
    x = 672,074.03

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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.