Home / 681,059.41-939,974.09-519,609.40

Finding the Fourth Proportional to 681,059.41, 939,974.09 and 519,609.40

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Solution

The fourth proportional to 681,059.41, 939,974.09 and 519,609.40 is: 717,146.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,059.41 : 939,974.09 = 519,609.40 : x
  2. Step 2: Convert to fraction form
    681,059.41/939,974.09 = 519,609.40/x
  3. Step 3: Cross multiply
    681,059.41x = 939,974.09 × 519,609.40
  4. Step 4: Simplify right side
    681,059.41x = 488,419,372,920.45
  5. Step 5: Solve for x
    x = 488,419,372,920.45/681,059.41
  6. Step 6: Final answer
    x = 717,146.50

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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.