Home / 512,226.41-706,215.29-420,005.90

Finding the Fourth Proportional to 512,226.41, 706,215.29 and 420,005.90

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Solution

The fourth proportional to 512,226.41, 706,215.29 and 420,005.90 is: 579,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,226.41 : 706,215.29 = 420,005.90 : x
  2. Step 2: Convert to fraction form
    512,226.41/706,215.29 = 420,005.90/x
  3. Step 3: Cross multiply
    512,226.41x = 706,215.29 × 420,005.90
  4. Step 4: Simplify right side
    512,226.41x = 296,614,582,839.11
  5. Step 5: Solve for x
    x = 296,614,582,839.11/512,226.41
  6. Step 6: Final answer
    x = 579,069.29

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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.