Home / 1,349,086.70-2,021,005.65-815,021.30

Finding the Fourth Proportional to 1,349,086.70, 2,021,005.65 and 815,021.30

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Solution

The fourth proportional to 1,349,086.70, 2,021,005.65 and 815,021.30 is: 1,220,946.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349,086.70 : 2,021,005.65 = 815,021.30 : x
  2. Step 2: Convert to fraction form
    1,349,086.70/2,021,005.65 = 815,021.30/x
  3. Step 3: Cross multiply
    1,349,086.70x = 2,021,005.65 × 815,021.30
  4. Step 4: Simplify right side
    1,349,086.70x = 1,647,162,652,170.35
  5. Step 5: Solve for x
    x = 1,647,162,652,170.35/1,349,086.70
  6. Step 6: Final answer
    x = 1,220,946.48

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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.