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Finding the Fourth Proportional to 549,009.70, 823,514.55 and 543,760.90

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Solution

The fourth proportional to 549,009.70, 823,514.55 and 543,760.90 is: 815,641.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,009.70 : 823,514.55 = 543,760.90 : x
  2. Step 2: Convert to fraction form
    549,009.70/823,514.55 = 543,760.90/x
  3. Step 3: Cross multiply
    549,009.70x = 823,514.55 × 543,760.90
  4. Step 4: Simplify right side
    549,009.70x = 447,795,012,871.10
  5. Step 5: Solve for x
    x = 447,795,012,871.10/549,009.70
  6. Step 6: Final answer
    x = 815,641.35

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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.