Home / 1,355,169.21-2,030,043.59-815,127.29

Finding the Fourth Proportional to 1,355,169.21, 2,030,043.59 and 815,127.29

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Solution

The fourth proportional to 1,355,169.21, 2,030,043.59 and 815,127.29 is: 1,221,060.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,169.21 : 2,030,043.59 = 815,127.29 : x
  2. Step 2: Convert to fraction form
    1,355,169.21/2,030,043.59 = 815,127.29/x
  3. Step 3: Cross multiply
    1,355,169.21x = 2,030,043.59 × 815,127.29
  4. Step 4: Simplify right side
    1,355,169.21x = 1,654,743,915,872.72
  5. Step 5: Solve for x
    x = 1,654,743,915,872.72/1,355,169.21
  6. Step 6: Final answer
    x = 1,221,060.74

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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.