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Finding the Fourth Proportional to 555,817.70, 766,945.59 and 314,098.31

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Solution

The fourth proportional to 555,817.70, 766,945.59 and 314,098.31 is: 433,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,817.70 : 766,945.59 = 314,098.31 : x
  2. Step 2: Convert to fraction form
    555,817.70/766,945.59 = 314,098.31/x
  3. Step 3: Cross multiply
    555,817.70x = 766,945.59 × 314,098.31
  4. Step 4: Simplify right side
    555,817.70x = 240,896,313,680.95
  5. Step 5: Solve for x
    x = 240,896,313,680.95/555,817.70
  6. Step 6: Final answer
    x = 433,408.86

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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.