Home / 2,665,612.20-3,998,418.30-772,415.40

Finding the Fourth Proportional to 2,665,612.20, 3,998,418.30 and 772,415.40

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Solution

The fourth proportional to 2,665,612.20, 3,998,418.30 and 772,415.40 is: 1,158,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665,612.20 : 3,998,418.30 = 772,415.40 : x
  2. Step 2: Convert to fraction form
    2,665,612.20/3,998,418.30 = 772,415.40/x
  3. Step 3: Cross multiply
    2,665,612.20x = 3,998,418.30 × 772,415.40
  4. Step 4: Simplify right side
    2,665,612.20x = 3,088,439,870,561.82
  5. Step 5: Solve for x
    x = 3,088,439,870,561.82/2,665,612.20
  6. Step 6: Final answer
    x = 1,158,623.10

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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.