Home / 1,515,786.12-2,086,475.45-1,321,851.68

Finding the Fourth Proportional to 1,515,786.12, 2,086,475.45 and 1,321,851.68

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Solution

The fourth proportional to 1,515,786.12, 2,086,475.45 and 1,321,851.68 is: 1,819,525.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,786.12 : 2,086,475.45 = 1,321,851.68 : x
  2. Step 2: Convert to fraction form
    1,515,786.12/2,086,475.45 = 1,321,851.68/x
  3. Step 3: Cross multiply
    1,515,786.12x = 2,086,475.45 × 1,321,851.68
  4. Step 4: Simplify right side
    1,515,786.12x = 2,758,011,069,643.90
  5. Step 5: Solve for x
    x = 2,758,011,069,643.90/1,515,786.12
  6. Step 6: Final answer
    x = 1,819,525.22

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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.