Home / 1,238,976,239.60-1,856,224,871.40-720,982,665.20

Finding the Fourth Proportional to 1,238,976,239.60, 1,856,224,871.40 and 720,982,665.20

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Solution

The fourth proportional to 1,238,976,239.60, 1,856,224,871.40 and 720,982,665.20 is: 1,080,170,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,976,239.60 : 1,856,224,871.40 = 720,982,665.20 : x
  2. Step 2: Convert to fraction form
    1,238,976,239.60/1,856,224,871.40 = 720,982,665.20/x
  3. Step 3: Cross multiply
    1,238,976,239.60x = 1,856,224,871.40 × 720,982,665.20
  4. Step 4: Simplify right side
    1,238,976,239.60x = 1,338,305,954,992,499,456
  5. Step 5: Solve for x
    x = 1,338,305,954,992,499,456/1,238,976,239.60
  6. Step 6: Final answer
    x = 1,080,170,799.26

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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.