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Finding the Fourth Proportional to 492,649.82, 679,799 and 277,777.08

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Solution

The fourth proportional to 492,649.82, 679,799 and 277,777.08 is: 383,299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,649.82 : 679,799 = 277,777.08 : x
  2. Step 2: Convert to fraction form
    492,649.82/679,799 = 277,777.08/x
  3. Step 3: Cross multiply
    492,649.82x = 679,799 × 277,777.08
  4. Step 4: Simplify right side
    492,649.82x = 188,832,581,206.92
  5. Step 5: Solve for x
    x = 188,832,581,206.92/492,649.82
  6. Step 6: Final answer
    x = 383,299.81

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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.