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Finding the Fourth Proportional to 555,532.74, 766,631.61 and 313,893.54

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Solution

The fourth proportional to 555,532.74, 766,631.61 and 313,893.54 is: 433,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,532.74 : 766,631.61 = 313,893.54 : x
  2. Step 2: Convert to fraction form
    555,532.74/766,631.61 = 313,893.54/x
  3. Step 3: Cross multiply
    555,532.74x = 766,631.61 × 313,893.54
  4. Step 4: Simplify right side
    555,532.74x = 240,640,709,938.80
  5. Step 5: Solve for x
    x = 240,640,709,938.80/555,532.74
  6. Step 6: Final answer
    x = 433,171.07

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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.