Home / 857,236.05-1,286,624.99-458,217.90

Finding the Fourth Proportional to 857,236.05, 1,286,624.99 and 458,217.90

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Solution

The fourth proportional to 857,236.05, 1,286,624.99 and 458,217.90 is: 687,738.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,236.05 : 1,286,624.99 = 458,217.90 : x
  2. Step 2: Convert to fraction form
    857,236.05/1,286,624.99 = 458,217.90/x
  3. Step 3: Cross multiply
    857,236.05x = 1,286,624.99 × 458,217.90
  4. Step 4: Simplify right side
    857,236.05x = 589,554,601,005.32
  5. Step 5: Solve for x
    x = 589,554,601,005.32/857,236.05
  6. Step 6: Final answer
    x = 687,738.93

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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.