Home / 3,914,378.60-5,871,567.90-2,638,920.20

Finding the Fourth Proportional to 3,914,378.60, 5,871,567.90 and 2,638,920.20

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Solution

The fourth proportional to 3,914,378.60, 5,871,567.90 and 2,638,920.20 is: 3,958,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914,378.60 : 5,871,567.90 = 2,638,920.20 : x
  2. Step 2: Convert to fraction form
    3,914,378.60/5,871,567.90 = 2,638,920.20/x
  3. Step 3: Cross multiply
    3,914,378.60x = 5,871,567.90 × 2,638,920.20
  4. Step 4: Simplify right side
    3,914,378.60x = 15,494,599,136,981.58
  5. Step 5: Solve for x
    x = 15,494,599,136,981.58/3,914,378.60
  6. Step 6: Final answer
    x = 3,958,380.30

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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.