Home / 641,821.75-885,714.05-351,451.64

Finding the Fourth Proportional to 641,821.75, 885,714.05 and 351,451.64

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Solution

The fourth proportional to 641,821.75, 885,714.05 and 351,451.64 is: 485,003.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,821.75 : 885,714.05 = 351,451.64 : x
  2. Step 2: Convert to fraction form
    641,821.75/885,714.05 = 351,451.64/x
  3. Step 3: Cross multiply
    641,821.75x = 885,714.05 × 351,451.64
  4. Step 4: Simplify right side
    641,821.75x = 311,285,658,536.46
  5. Step 5: Solve for x
    x = 311,285,658,536.46/641,821.75
  6. Step 6: Final answer
    x = 485,003.29

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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.