Home / 638,179.20-957,268.80-520,081.20

Finding the Fourth Proportional to 638,179.20, 957,268.80 and 520,081.20

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Solution

The fourth proportional to 638,179.20, 957,268.80 and 520,081.20 is: 780,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,179.20 : 957,268.80 = 520,081.20 : x
  2. Step 2: Convert to fraction form
    638,179.20/957,268.80 = 520,081.20/x
  3. Step 3: Cross multiply
    638,179.20x = 957,268.80 × 520,081.20
  4. Step 4: Simplify right side
    638,179.20x = 497,857,506,226.56
  5. Step 5: Solve for x
    x = 497,857,506,226.56/638,179.20
  6. Step 6: Final answer
    x = 780,121.80

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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.