Home / 638,451.14-881,069.37-351,981.48

Finding the Fourth Proportional to 638,451.14, 881,069.37 and 351,981.48

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Solution

The fourth proportional to 638,451.14, 881,069.37 and 351,981.48 is: 485,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,451.14 : 881,069.37 = 351,981.48 : x
  2. Step 2: Convert to fraction form
    638,451.14/881,069.37 = 351,981.48/x
  3. Step 3: Cross multiply
    638,451.14x = 881,069.37 × 351,981.48
  4. Step 4: Simplify right side
    638,451.14x = 310,120,100,835.27
  5. Step 5: Solve for x
    x = 310,120,100,835.27/638,451.14
  6. Step 6: Final answer
    x = 485,738.19

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Double scale
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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.