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Finding the Fourth Proportional to 636,108.75, 877,818.75 and 349,628.76

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Solution

The fourth proportional to 636,108.75, 877,818.75 and 349,628.76 is: 482,481.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,108.75 : 877,818.75 = 349,628.76 : x
  2. Step 2: Convert to fraction form
    636,108.75/877,818.75 = 349,628.76/x
  3. Step 3: Cross multiply
    636,108.75x = 877,818.75 × 349,628.76
  4. Step 4: Simplify right side
    636,108.75x = 306,910,681,067.25
  5. Step 5: Solve for x
    x = 306,910,681,067.25/636,108.75
  6. Step 6: Final answer
    x = 482,481.46

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1.5x scale

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.