Home / 980,810.20-1,471,215.30-389,834.20

Finding the Fourth Proportional to 980,810.20, 1,471,215.30 and 389,834.20

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Solution

The fourth proportional to 980,810.20, 1,471,215.30 and 389,834.20 is: 584,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,810.20 : 1,471,215.30 = 389,834.20 : x
  2. Step 2: Convert to fraction form
    980,810.20/1,471,215.30 = 389,834.20/x
  3. Step 3: Cross multiply
    980,810.20x = 1,471,215.30 × 389,834.20
  4. Step 4: Simplify right side
    980,810.20x = 573,530,039,503.26
  5. Step 5: Solve for x
    x = 573,530,039,503.26/980,810.20
  6. Step 6: Final answer
    x = 584,751.30

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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.