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Finding the Fourth Proportional to 552,652.60, 828,978.90 and 543,321.40

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Solution

The fourth proportional to 552,652.60, 828,978.90 and 543,321.40 is: 814,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,652.60 : 828,978.90 = 543,321.40 : x
  2. Step 2: Convert to fraction form
    552,652.60/828,978.90 = 543,321.40/x
  3. Step 3: Cross multiply
    552,652.60x = 828,978.90 × 543,321.40
  4. Step 4: Simplify right side
    552,652.60x = 450,401,976,518.46
  5. Step 5: Solve for x
    x = 450,401,976,518.46/552,652.60
  6. Step 6: Final answer
    x = 814,982.10

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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.