Home / 689,334.09-950,892.78-413,620.62

Finding the Fourth Proportional to 689,334.09, 950,892.78 and 413,620.62

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Solution

The fourth proportional to 689,334.09, 950,892.78 and 413,620.62 is: 570,563.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,334.09 : 950,892.78 = 413,620.62 : x
  2. Step 2: Convert to fraction form
    689,334.09/950,892.78 = 413,620.62/x
  3. Step 3: Cross multiply
    689,334.09x = 950,892.78 × 413,620.62
  4. Step 4: Simplify right side
    689,334.09x = 393,308,861,217.12
  5. Step 5: Solve for x
    x = 393,308,861,217.12/689,334.09
  6. Step 6: Final answer
    x = 570,563.49

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Double scale
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Similar ratio
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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.