Home / 1,686,857.70-2,530,286.55-1,119,987.30

Finding the Fourth Proportional to 1,686,857.70, 2,530,286.55 and 1,119,987.30

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Solution

The fourth proportional to 1,686,857.70, 2,530,286.55 and 1,119,987.30 is: 1,679,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686,857.70 : 2,530,286.55 = 1,119,987.30 : x
  2. Step 2: Convert to fraction form
    1,686,857.70/2,530,286.55 = 1,119,987.30/x
  3. Step 3: Cross multiply
    1,686,857.70x = 2,530,286.55 × 1,119,987.30
  4. Step 4: Simplify right side
    1,686,857.70x = 2,833,888,801,360.82
  5. Step 5: Solve for x
    x = 2,833,888,801,360.82/1,686,857.70
  6. Step 6: Final answer
    x = 1,679,980.95

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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.