Home / 638,184.96-880,690.83-351,705.28

Finding the Fourth Proportional to 638,184.96, 880,690.83 and 351,705.28

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Solution

The fourth proportional to 638,184.96, 880,690.83 and 351,705.28 is: 485,350.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,184.96 : 880,690.83 = 351,705.28 : x
  2. Step 2: Convert to fraction form
    638,184.96/880,690.83 = 351,705.28/x
  3. Step 3: Cross multiply
    638,184.96x = 880,690.83 × 351,705.28
  4. Step 4: Simplify right side
    638,184.96x = 309,743,614,958.58
  5. Step 5: Solve for x
    x = 309,743,614,958.58/638,184.96
  6. Step 6: Final answer
    x = 485,350.85

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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.