Home / 815,674.93-1,221,648.66-389,509.27

Finding the Fourth Proportional to 815,674.93, 1,221,648.66 and 389,509.27

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Solution

The fourth proportional to 815,674.93, 1,221,648.66 and 389,509.27 is: 583,373.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,674.93 : 1,221,648.66 = 389,509.27 : x
  2. Step 2: Convert to fraction form
    815,674.93/1,221,648.66 = 389,509.27/x
  3. Step 3: Cross multiply
    815,674.93x = 1,221,648.66 × 389,509.27
  4. Step 4: Simplify right side
    815,674.93x = 475,843,481,603.93
  5. Step 5: Solve for x
    x = 475,843,481,603.93/815,674.93
  6. Step 6: Final answer
    x = 583,373.92

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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.