Home / 1,591,278.85-2,196,012.21-979,784.41

Finding the Fourth Proportional to 1,591,278.85, 2,196,012.21 and 979,784.41

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Solution

The fourth proportional to 1,591,278.85, 2,196,012.21 and 979,784.41 is: 1,352,131.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591,278.85 : 2,196,012.21 = 979,784.41 : x
  2. Step 2: Convert to fraction form
    1,591,278.85/2,196,012.21 = 979,784.41/x
  3. Step 3: Cross multiply
    1,591,278.85x = 2,196,012.21 × 979,784.41
  4. Step 4: Simplify right side
    1,591,278.85x = 2,151,618,527,527.65
  5. Step 5: Solve for x
    x = 2,151,618,527,527.65/1,591,278.85
  6. Step 6: Final answer
    x = 1,352,131.67

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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.