Home / 725,135.16-1,086,782.58-409,768.68

Finding the Fourth Proportional to 725,135.16, 1,086,782.58 and 409,768.68

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Solution

The fourth proportional to 725,135.16, 1,086,782.58 and 409,768.68 is: 614,133.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,135.16 : 1,086,782.58 = 409,768.68 : x
  2. Step 2: Convert to fraction form
    725,135.16/1,086,782.58 = 409,768.68/x
  3. Step 3: Cross multiply
    725,135.16x = 1,086,782.58 × 409,768.68
  4. Step 4: Simplify right side
    725,135.16x = 445,329,463,253.59
  5. Step 5: Solve for x
    x = 445,329,463,253.59/725,135.16
  6. Step 6: Final answer
    x = 614,133.04

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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.