Home / 743,147.39-1,025,509.12-420,859.83

Finding the Fourth Proportional to 743,147.39, 1,025,509.12 and 420,859.83

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Solution

The fourth proportional to 743,147.39, 1,025,509.12 and 420,859.83 is: 580,767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,147.39 : 1,025,509.12 = 420,859.83 : x
  2. Step 2: Convert to fraction form
    743,147.39/1,025,509.12 = 420,859.83/x
  3. Step 3: Cross multiply
    743,147.39x = 1,025,509.12 × 420,859.83
  4. Step 4: Simplify right side
    743,147.39x = 431,595,593,906.65
  5. Step 5: Solve for x
    x = 431,595,593,906.65/743,147.39
  6. Step 6: Final answer
    x = 580,767.15

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1.5x scale

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.