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Finding the Fourth Proportional to 554,911.43, 765,780.41 and 313,204.19

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Solution

The fourth proportional to 554,911.43, 765,780.41 and 313,204.19 is: 432,223.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,911.43 : 765,780.41 = 313,204.19 : x
  2. Step 2: Convert to fraction form
    554,911.43/765,780.41 = 313,204.19/x
  3. Step 3: Cross multiply
    554,911.43x = 765,780.41 × 313,204.19
  4. Step 4: Simplify right side
    554,911.43x = 239,845,633,380.35
  5. Step 5: Solve for x
    x = 239,845,633,380.35/554,911.43
  6. Step 6: Final answer
    x = 432,223.27

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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.