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Finding the Fourth Proportional to 529,481.80, 794,222.70 and 439,280.20

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Solution

The fourth proportional to 529,481.80, 794,222.70 and 439,280.20 is: 658,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,481.80 : 794,222.70 = 439,280.20 : x
  2. Step 2: Convert to fraction form
    529,481.80/794,222.70 = 439,280.20/x
  3. Step 3: Cross multiply
    529,481.80x = 794,222.70 × 439,280.20
  4. Step 4: Simplify right side
    529,481.80x = 348,886,306,500.54
  5. Step 5: Solve for x
    x = 348,886,306,500.54/529,481.80
  6. Step 6: Final answer
    x = 658,920.30

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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.