Home / 639,416.10-957,860.55-414,932.70

Finding the Fourth Proportional to 639,416.10, 957,860.55 and 414,932.70

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Solution

The fourth proportional to 639,416.10, 957,860.55 and 414,932.70 is: 621,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,416.10 : 957,860.55 = 414,932.70 : x
  2. Step 2: Convert to fraction form
    639,416.10/957,860.55 = 414,932.70/x
  3. Step 3: Cross multiply
    639,416.10x = 957,860.55 × 414,932.70
  4. Step 4: Simplify right side
    639,416.10x = 397,447,664,234.99
  5. Step 5: Solve for x
    x = 397,447,664,234.99/639,416.10
  6. Step 6: Final answer
    x = 621,579.07

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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.