Home / 3,280,661.20-4,920,991.80-3,138,943.60

Finding the Fourth Proportional to 3,280,661.20, 4,920,991.80 and 3,138,943.60

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Solution

The fourth proportional to 3,280,661.20, 4,920,991.80 and 3,138,943.60 is: 4,708,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,661.20 : 4,920,991.80 = 3,138,943.60 : x
  2. Step 2: Convert to fraction form
    3,280,661.20/4,920,991.80 = 3,138,943.60/x
  3. Step 3: Cross multiply
    3,280,661.20x = 4,920,991.80 × 3,138,943.60
  4. Step 4: Simplify right side
    3,280,661.20x = 15,446,715,716,262.48
  5. Step 5: Solve for x
    x = 15,446,715,716,262.48/3,280,661.20
  6. Step 6: Final answer
    x = 4,708,415.40

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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.