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Finding the Fourth Proportional to 536,543,998.80, 804,815,998.20 and 515,380,837.20

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Solution

The fourth proportional to 536,543,998.80, 804,815,998.20 and 515,380,837.20 is: 773,071,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,543,998.80 : 804,815,998.20 = 515,380,837.20 : x
  2. Step 2: Convert to fraction form
    536,543,998.80/804,815,998.20 = 515,380,837.20/x
  3. Step 3: Cross multiply
    536,543,998.80x = 804,815,998.20 × 515,380,837.20
  4. Step 4: Simplify right side
    536,543,998.80x = 414,786,742,944,269,696
  5. Step 5: Solve for x
    x = 414,786,742,944,269,696/536,543,998.80
  6. Step 6: Final answer
    x = 773,071,255.80

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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.