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Finding the Fourth Proportional to 367,415,998.80, 515,062,642.80 and 367,415,998.80

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Solution

The fourth proportional to 367,415,998.80, 515,062,642.80 and 367,415,998.80 is: 515,062,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,415,998.80 : 515,062,642.80 = 367,415,998.80 : x
  2. Step 2: Convert to fraction form
    367,415,998.80/515,062,642.80 = 367,415,998.80/x
  3. Step 3: Cross multiply
    367,415,998.80x = 515,062,642.80 × 367,415,998.80
  4. Step 4: Simplify right side
    367,415,998.80x = 189,242,255,348,929,632
  5. Step 5: Solve for x
    x = 189,242,255,348,929,632/367,415,998.80
  6. Step 6: Final answer
    x = 515,062,642.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.