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Finding the Fourth Proportional to 491,182.56, 677,780.70 and 276,304.35

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Solution

The fourth proportional to 491,182.56, 677,780.70 and 276,304.35 is: 381,271.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,182.56 : 677,780.70 = 276,304.35 : x
  2. Step 2: Convert to fraction form
    491,182.56/677,780.70 = 276,304.35/x
  3. Step 3: Cross multiply
    491,182.56x = 677,780.70 × 276,304.35
  4. Step 4: Simplify right side
    491,182.56x = 187,273,755,756.05
  5. Step 5: Solve for x
    x = 187,273,755,756.05/491,182.56
  6. Step 6: Final answer
    x = 381,271.18

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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.