Home / 862,208.29-1,189,847.77-499,842.21

Finding the Fourth Proportional to 862,208.29, 1,189,847.77 and 499,842.21

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Solution

The fourth proportional to 862,208.29, 1,189,847.77 and 499,842.21 is: 689,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,208.29 : 1,189,847.77 = 499,842.21 : x
  2. Step 2: Convert to fraction form
    862,208.29/1,189,847.77 = 499,842.21/x
  3. Step 3: Cross multiply
    862,208.29x = 1,189,847.77 × 499,842.21
  4. Step 4: Simplify right side
    862,208.29x = 594,736,135,439.80
  5. Step 5: Solve for x
    x = 594,736,135,439.80/862,208.29
  6. Step 6: Final answer
    x = 689,782.44

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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.