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Finding the Fourth Proportional to 491,445.84, 678,217.08 and 276,599.82

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Solution

The fourth proportional to 491,445.84, 678,217.08 and 276,599.82 is: 381,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,445.84 : 678,217.08 = 276,599.82 : x
  2. Step 2: Convert to fraction form
    491,445.84/678,217.08 = 276,599.82/x
  3. Step 3: Cross multiply
    491,445.84x = 678,217.08 × 276,599.82
  4. Step 4: Simplify right side
    491,445.84x = 187,594,722,248.93
  5. Step 5: Solve for x
    x = 187,594,722,248.93/491,445.84
  6. Step 6: Final answer
    x = 381,720.03

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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.