Home / 1,991,285.03-2,747,927.75-1,216,912.84

Finding the Fourth Proportional to 1,991,285.03, 2,747,927.75 and 1,216,912.84

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Solution

The fourth proportional to 1,991,285.03, 2,747,927.75 and 1,216,912.84 is: 1,679,311.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,285.03 : 2,747,927.75 = 1,216,912.84 : x
  2. Step 2: Convert to fraction form
    1,991,285.03/2,747,927.75 = 1,216,912.84/x
  3. Step 3: Cross multiply
    1,991,285.03x = 2,747,927.75 × 1,216,912.84
  4. Step 4: Simplify right side
    1,991,285.03x = 3,343,988,549,412.93
  5. Step 5: Solve for x
    x = 3,343,988,549,412.93/1,991,285.03
  6. Step 6: Final answer
    x = 1,679,311.85

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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.