Home / 1,279,156,144.40-1,918,734,216.60-1,187,323,139.60

Finding the Fourth Proportional to 1,279,156,144.40, 1,918,734,216.60 and 1,187,323,139.60

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Solution

The fourth proportional to 1,279,156,144.40, 1,918,734,216.60 and 1,187,323,139.60 is: 1,780,984,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,156,144.40 : 1,918,734,216.60 = 1,187,323,139.60 : x
  2. Step 2: Convert to fraction form
    1,279,156,144.40/1,918,734,216.60 = 1,187,323,139.60/x
  3. Step 3: Cross multiply
    1,279,156,144.40x = 1,918,734,216.60 × 1,187,323,139.60
  4. Step 4: Simplify right side
    1,279,156,144.40x = 2,278,157,534,111,458,048
  5. Step 5: Solve for x
    x = 2,278,157,534,111,458,048/1,279,156,144.40
  6. Step 6: Final answer
    x = 1,780,984,709.40

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Double scale
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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.