Home / 1,138,136.06-1,570,659.45-628,871.24

Finding the Fourth Proportional to 1,138,136.06, 1,570,659.45 and 628,871.24

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Solution

The fourth proportional to 1,138,136.06, 1,570,659.45 and 628,871.24 is: 867,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,136.06 : 1,570,659.45 = 628,871.24 : x
  2. Step 2: Convert to fraction form
    1,138,136.06/1,570,659.45 = 628,871.24/x
  3. Step 3: Cross multiply
    1,138,136.06x = 1,570,659.45 × 628,871.24
  4. Step 4: Simplify right side
    1,138,136.06x = 987,742,555,939.22
  5. Step 5: Solve for x
    x = 987,742,555,939.22/1,138,136.06
  6. Step 6: Final answer
    x = 867,859.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.