Home / 1,942,991.80-2,912,349.30-680,169.40

Finding the Fourth Proportional to 1,942,991.80, 2,912,349.30 and 680,169.40

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Solution

The fourth proportional to 1,942,991.80, 2,912,349.30 and 680,169.40 is: 1,019,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942,991.80 : 2,912,349.30 = 680,169.40 : x
  2. Step 2: Convert to fraction form
    1,942,991.80/2,912,349.30 = 680,169.40/x
  3. Step 3: Cross multiply
    1,942,991.80x = 2,912,349.30 × 680,169.40
  4. Step 4: Simplify right side
    1,942,991.80x = 1,980,890,875,971.42
  5. Step 5: Solve for x
    x = 1,980,890,875,971.42/1,942,991.80
  6. Step 6: Final answer
    x = 1,019,505.53

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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.