Home / 862,217.21-1,189,860.08-499,851.15

Finding the Fourth Proportional to 862,217.21, 1,189,860.08 and 499,851.15

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Solution

The fourth proportional to 862,217.21, 1,189,860.08 and 499,851.15 is: 689,794.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,217.21 : 1,189,860.08 = 499,851.15 : x
  2. Step 2: Convert to fraction form
    862,217.21/1,189,860.08 = 499,851.15/x
  3. Step 3: Cross multiply
    862,217.21x = 1,189,860.08 × 499,851.15
  4. Step 4: Simplify right side
    862,217.21x = 594,752,926,827.84
  5. Step 5: Solve for x
    x = 594,752,926,827.84/862,217.21
  6. Step 6: Final answer
    x = 689,794.78

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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.