Home / 1,991,086.20-2,987,795.70-729,041.40

Finding the Fourth Proportional to 1,991,086.20, 2,987,795.70 and 729,041.40

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Solution

The fourth proportional to 1,991,086.20, 2,987,795.70 and 729,041.40 is: 1,093,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,086.20 : 2,987,795.70 = 729,041.40 : x
  2. Step 2: Convert to fraction form
    1,991,086.20/2,987,795.70 = 729,041.40/x
  3. Step 3: Cross multiply
    1,991,086.20x = 2,987,795.70 × 729,041.40
  4. Step 4: Simplify right side
    1,991,086.20x = 2,178,226,760,041.98
  5. Step 5: Solve for x
    x = 2,178,226,760,041.98/1,991,086.20
  6. Step 6: Final answer
    x = 1,093,989.18

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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.