Home / 1,278,463,364.80-1,917,695,047.20-865,214,843.20

Finding the Fourth Proportional to 1,278,463,364.80, 1,917,695,047.20 and 865,214,843.20

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Solution

The fourth proportional to 1,278,463,364.80, 1,917,695,047.20 and 865,214,843.20 is: 1,297,822,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,463,364.80 : 1,917,695,047.20 = 865,214,843.20 : x
  2. Step 2: Convert to fraction form
    1,278,463,364.80/1,917,695,047.20 = 865,214,843.20/x
  3. Step 3: Cross multiply
    1,278,463,364.80x = 1,917,695,047.20 × 865,214,843.20
  4. Step 4: Simplify right side
    1,278,463,364.80x = 1,659,218,219,568,564,736
  5. Step 5: Solve for x
    x = 1,659,218,219,568,564,736/1,278,463,364.80
  6. Step 6: Final answer
    x = 1,297,822,264.80

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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.