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Finding the Fourth Proportional to 636,101.97, 877,809.44 and 349,621.98

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Solution

The fourth proportional to 636,101.97, 877,809.44 and 349,621.98 is: 482,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,101.97 : 877,809.44 = 349,621.98 : x
  2. Step 2: Convert to fraction form
    636,101.97/877,809.44 = 349,621.98/x
  3. Step 3: Cross multiply
    636,101.97x = 877,809.44 × 349,621.98
  4. Step 4: Simplify right side
    636,101.97x = 306,901,474,475.49
  5. Step 5: Solve for x
    x = 306,901,474,475.49/636,101.97
  6. Step 6: Final answer
    x = 482,472.13

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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.