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Finding the Fourth Proportional to 555,493.39, 766,628.08 and 313,820.33

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Solution

The fourth proportional to 555,493.39, 766,628.08 and 313,820.33 is: 433,098.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,493.39 : 766,628.08 = 313,820.33 : x
  2. Step 2: Convert to fraction form
    555,493.39/766,628.08 = 313,820.33/x
  3. Step 3: Cross multiply
    555,493.39x = 766,628.08 × 313,820.33
  4. Step 4: Simplify right side
    555,493.39x = 240,583,472,435.18
  5. Step 5: Solve for x
    x = 240,583,472,435.18/555,493.39
  6. Step 6: Final answer
    x = 433,098.72

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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.