Home / 815,771.58-1,223,681.49-389,352.33

Finding the Fourth Proportional to 815,771.58, 1,223,681.49 and 389,352.33

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Solution

The fourth proportional to 815,771.58, 1,223,681.49 and 389,352.33 is: 584,040.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,771.58 : 1,223,681.49 = 389,352.33 : x
  2. Step 2: Convert to fraction form
    815,771.58/1,223,681.49 = 389,352.33/x
  3. Step 3: Cross multiply
    815,771.58x = 1,223,681.49 × 389,352.33
  4. Step 4: Simplify right side
    815,771.58x = 476,443,239,309.37
  5. Step 5: Solve for x
    x = 476,443,239,309.37/815,771.58
  6. Step 6: Final answer
    x = 584,040.01

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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.