Home / 1,279,155,590.40-1,918,733,385.60-1,187,322,585.60

Finding the Fourth Proportional to 1,279,155,590.40, 1,918,733,385.60 and 1,187,322,585.60

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Solution

The fourth proportional to 1,279,155,590.40, 1,918,733,385.60 and 1,187,322,585.60 is: 1,780,983,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,155,590.40 : 1,918,733,385.60 = 1,187,322,585.60 : x
  2. Step 2: Convert to fraction form
    1,279,155,590.40/1,918,733,385.60 = 1,187,322,585.60/x
  3. Step 3: Cross multiply
    1,279,155,590.40x = 1,918,733,385.60 × 1,187,322,585.60
  4. Step 4: Simplify right side
    1,279,155,590.40x = 2,278,155,484,467,633,408
  5. Step 5: Solve for x
    x = 2,278,155,484,467,633,408/1,279,155,590.40
  6. Step 6: Final answer
    x = 1,780,983,878.40

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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.