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Finding the Fourth Proportional to 555,544.74, 766,648.17 and 313,905.54

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Solution

The fourth proportional to 555,544.74, 766,648.17 and 313,905.54 is: 433,187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,544.74 : 766,648.17 = 313,905.54 : x
  2. Step 2: Convert to fraction form
    555,544.74/766,648.17 = 313,905.54/x
  3. Step 3: Cross multiply
    555,544.74x = 766,648.17 × 313,905.54
  4. Step 4: Simplify right side
    555,544.74x = 240,655,107,793.86
  5. Step 5: Solve for x
    x = 240,655,107,793.86/555,544.74
  6. Step 6: Final answer
    x = 433,187.63

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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.