Home / 2,665,182.70-3,997,738.77-643,415.72

Finding the Fourth Proportional to 2,665,182.70, 3,997,738.77 and 643,415.72

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Solution

The fourth proportional to 2,665,182.70, 3,997,738.77 and 643,415.72 is: 965,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665,182.70 : 3,997,738.77 = 643,415.72 : x
  2. Step 2: Convert to fraction form
    2,665,182.70/3,997,738.77 = 643,415.72/x
  3. Step 3: Cross multiply
    2,665,182.70x = 3,997,738.77 × 643,415.72
  4. Step 4: Simplify right side
    2,665,182.70x = 2,572,207,946,669.96
  5. Step 5: Solve for x
    x = 2,572,207,946,669.96/2,665,182.70
  6. Step 6: Final answer
    x = 965,115.05

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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.