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Finding the Fourth Proportional to 548,676.20, 823,014.30 and 455,364.20

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Solution

The fourth proportional to 548,676.20, 823,014.30 and 455,364.20 is: 683,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,676.20 : 823,014.30 = 455,364.20 : x
  2. Step 2: Convert to fraction form
    548,676.20/823,014.30 = 455,364.20/x
  3. Step 3: Cross multiply
    548,676.20x = 823,014.30 × 455,364.20
  4. Step 4: Simplify right side
    548,676.20x = 374,771,248,308.06
  5. Step 5: Solve for x
    x = 374,771,248,308.06/548,676.20
  6. Step 6: Final answer
    x = 683,046.30

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Double scale
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Similar ratio
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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.