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Finding the Fourth Proportional to 491,114.28, 677,730.84 and 276,254.34

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Solution

The fourth proportional to 491,114.28, 677,730.84 and 276,254.34 is: 381,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,114.28 : 677,730.84 = 276,254.34 : x
  2. Step 2: Convert to fraction form
    491,114.28/677,730.84 = 276,254.34/x
  3. Step 3: Cross multiply
    491,114.28x = 677,730.84 × 276,254.34
  4. Step 4: Simplify right side
    491,114.28x = 187,226,085,901.85
  5. Step 5: Solve for x
    x = 187,226,085,901.85/491,114.28
  6. Step 6: Final answer
    x = 381,227.13

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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.