Home / 28,471,707.20-42,707,560.80-28,206,286.40

Finding the Fourth Proportional to 28,471,707.20, 42,707,560.80 and 28,206,286.40

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Solution

The fourth proportional to 28,471,707.20, 42,707,560.80 and 28,206,286.40 is: 42,309,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471,707.20 : 42,707,560.80 = 28,206,286.40 : x
  2. Step 2: Convert to fraction form
    28,471,707.20/42,707,560.80 = 28,206,286.40/x
  3. Step 3: Cross multiply
    28,471,707.20x = 42,707,560.80 × 28,206,286.40
  4. Step 4: Simplify right side
    28,471,707.20x = 1,204,621,691,370,213
  5. Step 5: Solve for x
    x = 1,204,621,691,370,213/28,471,707.20
  6. Step 6: Final answer
    x = 42,309,429.60

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1.5x scale

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.