Home / 1,355,163.38-2,030,034.89-815,121.47

Finding the Fourth Proportional to 1,355,163.38, 2,030,034.89 and 815,121.47

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Solution

The fourth proportional to 1,355,163.38, 2,030,034.89 and 815,121.47 is: 1,221,052.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,163.38 : 2,030,034.89 = 815,121.47 : x
  2. Step 2: Convert to fraction form
    1,355,163.38/2,030,034.89 = 815,121.47/x
  3. Step 3: Cross multiply
    1,355,163.38x = 2,030,034.89 × 815,121.47
  4. Step 4: Simplify right side
    1,355,163.38x = 1,654,725,030,800.98
  5. Step 5: Solve for x
    x = 1,654,725,030,800.98/1,355,163.38
  6. Step 6: Final answer
    x = 1,221,052.06

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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.