Home / 1,389,063.70-2,079,448.35-827,809.30

Finding the Fourth Proportional to 1,389,063.70, 2,079,448.35 and 827,809.30

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Solution

The fourth proportional to 1,389,063.70, 2,079,448.35 and 827,809.30 is: 1,239,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,063.70 : 2,079,448.35 = 827,809.30 : x
  2. Step 2: Convert to fraction form
    1,389,063.70/2,079,448.35 = 827,809.30/x
  3. Step 3: Cross multiply
    1,389,063.70x = 2,079,448.35 × 827,809.30
  4. Step 4: Simplify right side
    1,389,063.70x = 1,721,386,682,999.66
  5. Step 5: Solve for x
    x = 1,721,386,682,999.66/1,389,063.70
  6. Step 6: Final answer
    x = 1,239,242.44

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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.