Home / 728,538.26-1,005,659.94-547,775.21

Finding the Fourth Proportional to 728,538.26, 1,005,659.94 and 547,775.21

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Solution

The fourth proportional to 728,538.26, 1,005,659.94 and 547,775.21 is: 756,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,538.26 : 1,005,659.94 = 547,775.21 : x
  2. Step 2: Convert to fraction form
    728,538.26/1,005,659.94 = 547,775.21/x
  3. Step 3: Cross multiply
    728,538.26x = 1,005,659.94 × 547,775.21
  4. Step 4: Simplify right side
    728,538.26x = 550,875,579,793.79
  5. Step 5: Solve for x
    x = 550,875,579,793.79/728,538.26
  6. Step 6: Final answer
    x = 756,138.17

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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.