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Finding the Fourth Proportional to 518,626.80, 778,049.55 and 163,676.70

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Solution

The fourth proportional to 518,626.80, 778,049.55 and 163,676.70 is: 245,549.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,626.80 : 778,049.55 = 163,676.70 : x
  2. Step 2: Convert to fraction form
    518,626.80/778,049.55 = 163,676.70/x
  3. Step 3: Cross multiply
    518,626.80x = 778,049.55 × 163,676.70
  4. Step 4: Simplify right side
    518,626.80x = 127,348,582,780.49
  5. Step 5: Solve for x
    x = 127,348,582,780.49/518,626.80
  6. Step 6: Final answer
    x = 245,549.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.