Home / 815,956.40-1,125,835.80-493,658.48

Finding the Fourth Proportional to 815,956.40, 1,125,835.80 and 493,658.48

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Solution

The fourth proportional to 815,956.40, 1,125,835.80 and 493,658.48 is: 681,137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,956.40 : 1,125,835.80 = 493,658.48 : x
  2. Step 2: Convert to fraction form
    815,956.40/1,125,835.80 = 493,658.48/x
  3. Step 3: Cross multiply
    815,956.40x = 1,125,835.80 × 493,658.48
  4. Step 4: Simplify right side
    815,956.40x = 555,778,389,757.58
  5. Step 5: Solve for x
    x = 555,778,389,757.58/815,956.40
  6. Step 6: Final answer
    x = 681,137.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.