Home / 2,639,642.91-3,642,707.21-1,432,418.91

Finding the Fourth Proportional to 2,639,642.91, 3,642,707.21 and 1,432,418.91

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Solution

The fourth proportional to 2,639,642.91, 3,642,707.21 and 1,432,418.91 is: 1,976,738.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639,642.91 : 3,642,707.21 = 1,432,418.91 : x
  2. Step 2: Convert to fraction form
    2,639,642.91/3,642,707.21 = 1,432,418.91/x
  3. Step 3: Cross multiply
    2,639,642.91x = 3,642,707.21 × 1,432,418.91
  4. Step 4: Simplify right side
    2,639,642.91x = 5,217,882,678,432.45
  5. Step 5: Solve for x
    x = 5,217,882,678,432.45/2,639,642.91
  6. Step 6: Final answer
    x = 1,976,738.09

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Double scale
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1.5x scale

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.