Home / 1,279,155,610.40-1,918,733,415.60-1,187,322,605.60

Finding the Fourth Proportional to 1,279,155,610.40, 1,918,733,415.60 and 1,187,322,605.60

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Solution

The fourth proportional to 1,279,155,610.40, 1,918,733,415.60 and 1,187,322,605.60 is: 1,780,983,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,155,610.40 : 1,918,733,415.60 = 1,187,322,605.60 : x
  2. Step 2: Convert to fraction form
    1,279,155,610.40/1,918,733,415.60 = 1,187,322,605.60/x
  3. Step 3: Cross multiply
    1,279,155,610.40x = 1,918,733,415.60 × 1,187,322,605.60
  4. Step 4: Simplify right side
    1,279,155,610.40x = 2,278,155,558,461,979,392
  5. Step 5: Solve for x
    x = 2,278,155,558,461,979,392/1,279,155,610.40
  6. Step 6: Final answer
    x = 1,780,983,908.40

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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.