Home / 659,623.20-989,434.80-344,039.10

Finding the Fourth Proportional to 659,623.20, 989,434.80 and 344,039.10

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Solution

The fourth proportional to 659,623.20, 989,434.80 and 344,039.10 is: 516,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,623.20 : 989,434.80 = 344,039.10 : x
  2. Step 2: Convert to fraction form
    659,623.20/989,434.80 = 344,039.10/x
  3. Step 3: Cross multiply
    659,623.20x = 989,434.80 × 344,039.10
  4. Step 4: Simplify right side
    659,623.20x = 340,404,258,100.68
  5. Step 5: Solve for x
    x = 340,404,258,100.68/659,623.20
  6. Step 6: Final answer
    x = 516,058.65

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Similar ratio
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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.