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Finding the Fourth Proportional to 555,608.44, 766,694.16 and 313,912

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Solution

The fourth proportional to 555,608.44, 766,694.16 and 313,912 is: 433,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,608.44 : 766,694.16 = 313,912 : x
  2. Step 2: Convert to fraction form
    555,608.44/766,694.16 = 313,912/x
  3. Step 3: Cross multiply
    555,608.44x = 766,694.16 × 313,912
  4. Step 4: Simplify right side
    555,608.44x = 240,674,497,153.92
  5. Step 5: Solve for x
    x = 240,674,497,153.92/555,608.44
  6. Step 6: Final answer
    x = 433,172.86

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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.