Home / 815,381.19-1,222,532.06-388,982.88

Finding the Fourth Proportional to 815,381.19, 1,222,532.06 and 388,982.88

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Solution

The fourth proportional to 815,381.19, 1,222,532.06 and 388,982.88 is: 583,216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,381.19 : 1,222,532.06 = 388,982.88 : x
  2. Step 2: Convert to fraction form
    815,381.19/1,222,532.06 = 388,982.88/x
  3. Step 3: Cross multiply
    815,381.19x = 1,222,532.06 × 388,982.88
  4. Step 4: Simplify right side
    815,381.19x = 475,544,039,646.22
  5. Step 5: Solve for x
    x = 475,544,039,646.22/815,381.19
  6. Step 6: Final answer
    x = 583,216.84

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1.5x scale

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.