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Finding the Fourth Proportional to 494,275.66, 682,129.82 and 279,435.71

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Solution

The fourth proportional to 494,275.66, 682,129.82 and 279,435.71 is: 385,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,275.66 : 682,129.82 = 279,435.71 : x
  2. Step 2: Convert to fraction form
    494,275.66/682,129.82 = 279,435.71/x
  3. Step 3: Cross multiply
    494,275.66x = 682,129.82 × 279,435.71
  4. Step 4: Simplify right side
    494,275.66x = 190,611,432,967.79
  5. Step 5: Solve for x
    x = 190,611,432,967.79/494,275.66
  6. Step 6: Final answer
    x = 385,637.91

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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.