Home / 681,563.12-940,594.09-391,172.36

Finding the Fourth Proportional to 681,563.12, 940,594.09 and 391,172.36

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Solution

The fourth proportional to 681,563.12, 940,594.09 and 391,172.36 is: 539,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,563.12 : 940,594.09 = 391,172.36 : x
  2. Step 2: Convert to fraction form
    681,563.12/940,594.09 = 391,172.36/x
  3. Step 3: Cross multiply
    681,563.12x = 940,594.09 × 391,172.36
  4. Step 4: Simplify right side
    681,563.12x = 367,934,408,031.49
  5. Step 5: Solve for x
    x = 367,934,408,031.49/681,563.12
  6. Step 6: Final answer
    x = 539,839.08

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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.