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Finding the Fourth Proportional to 549,511.20, 824,266.80 and 309,378.60

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Solution

The fourth proportional to 549,511.20, 824,266.80 and 309,378.60 is: 464,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,511.20 : 824,266.80 = 309,378.60 : x
  2. Step 2: Convert to fraction form
    549,511.20/824,266.80 = 309,378.60/x
  3. Step 3: Cross multiply
    549,511.20x = 824,266.80 × 309,378.60
  4. Step 4: Simplify right side
    549,511.20x = 255,010,508,610.48
  5. Step 5: Solve for x
    x = 255,010,508,610.48/549,511.20
  6. Step 6: Final answer
    x = 464,067.90

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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.