Home / 643,917.32-888,561.44-357,414.84

Finding the Fourth Proportional to 643,917.32, 888,561.44 and 357,414.84

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Solution

The fourth proportional to 643,917.32, 888,561.44 and 357,414.84 is: 493,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,917.32 : 888,561.44 = 357,414.84 : x
  2. Step 2: Convert to fraction form
    643,917.32/888,561.44 = 357,414.84/x
  3. Step 3: Cross multiply
    643,917.32x = 888,561.44 × 357,414.84
  4. Step 4: Simplify right side
    643,917.32x = 317,585,043,120.70
  5. Step 5: Solve for x
    x = 317,585,043,120.70/643,917.32
  6. Step 6: Final answer
    x = 493,207.80

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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.