Home / 743,965.48-1,115,977.38-388,738.36

Finding the Fourth Proportional to 743,965.48, 1,115,977.38 and 388,738.36

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Solution

The fourth proportional to 743,965.48, 1,115,977.38 and 388,738.36 is: 583,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,965.48 : 1,115,977.38 = 388,738.36 : x
  2. Step 2: Convert to fraction form
    743,965.48/1,115,977.38 = 388,738.36/x
  3. Step 3: Cross multiply
    743,965.48x = 1,115,977.38 × 388,738.36
  4. Step 4: Simplify right side
    743,965.48x = 433,823,216,498.30
  5. Step 5: Solve for x
    x = 433,823,216,498.30/743,965.48
  6. Step 6: Final answer
    x = 583,122.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.