Home / 786,591,918.40-1,181,231,570.40-515,165,972.80

Finding the Fourth Proportional to 786,591,918.40, 1,181,231,570.40 and 515,165,972.80

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Solution

The fourth proportional to 786,591,918.40, 1,181,231,570.40 and 515,165,972.80 is: 773,628,989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,591,918.40 : 1,181,231,570.40 = 515,165,972.80 : x
  2. Step 2: Convert to fraction form
    786,591,918.40/1,181,231,570.40 = 515,165,972.80/x
  3. Step 3: Cross multiply
    786,591,918.40x = 1,181,231,570.40 × 515,165,972.80
  4. Step 4: Simplify right side
    786,591,918.40x = 608,530,311,067,187,712
  5. Step 5: Solve for x
    x = 608,530,311,067,187,712/786,591,918.40
  6. Step 6: Final answer
    x = 773,628,989.61

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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.