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Finding the Fourth Proportional to 636,199.93, 877,956.85 and 349,721.76

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Solution

The fourth proportional to 636,199.93, 877,956.85 and 349,721.76 is: 482,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,199.93 : 877,956.85 = 349,721.76 : x
  2. Step 2: Convert to fraction form
    636,199.93/877,956.85 = 349,721.76/x
  3. Step 3: Cross multiply
    636,199.93x = 877,956.85 × 349,721.76
  4. Step 4: Simplify right side
    636,199.93x = 307,040,614,786.06
  5. Step 5: Solve for x
    x = 307,040,614,786.06/636,199.93
  6. Step 6: Final answer
    x = 482,616.55

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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.