Home / 815,515.83-1,223,024.06-388,826.66

Finding the Fourth Proportional to 815,515.83, 1,223,024.06 and 388,826.66

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Solution

The fourth proportional to 815,515.83, 1,223,024.06 and 388,826.66 is: 583,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,515.83 : 1,223,024.06 = 388,826.66 : x
  2. Step 2: Convert to fraction form
    815,515.83/1,223,024.06 = 388,826.66/x
  3. Step 3: Cross multiply
    815,515.83x = 1,223,024.06 × 388,826.66
  4. Step 4: Simplify right side
    815,515.83x = 475,544,364,379.07
  5. Step 5: Solve for x
    x = 475,544,364,379.07/815,515.83
  6. Step 6: Final answer
    x = 583,120.95

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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.