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Finding the Fourth Proportional to 494,649.84, 682,718.76 and 279,798.96

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Solution

The fourth proportional to 494,649.84, 682,718.76 and 279,798.96 is: 386,180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,649.84 : 682,718.76 = 279,798.96 : x
  2. Step 2: Convert to fraction form
    494,649.84/682,718.76 = 279,798.96/x
  3. Step 3: Cross multiply
    494,649.84x = 682,718.76 × 279,798.96
  4. Step 4: Simplify right side
    494,649.84x = 191,023,999,020.49
  5. Step 5: Solve for x
    x = 191,023,999,020.49/494,649.84
  6. Step 6: Final answer
    x = 386,180.25

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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.