Home / 1,278,463,342.80-1,917,695,014.20-865,214,821.20

Finding the Fourth Proportional to 1,278,463,342.80, 1,917,695,014.20 and 865,214,821.20

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Solution

The fourth proportional to 1,278,463,342.80, 1,917,695,014.20 and 865,214,821.20 is: 1,297,822,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,463,342.80 : 1,917,695,014.20 = 865,214,821.20 : x
  2. Step 2: Convert to fraction form
    1,278,463,342.80/1,917,695,014.20 = 865,214,821.20/x
  3. Step 3: Cross multiply
    1,278,463,342.80x = 1,917,695,014.20 × 865,214,821.20
  4. Step 4: Simplify right side
    1,278,463,342.80x = 1,659,218,148,827,184,640
  5. Step 5: Solve for x
    x = 1,659,218,148,827,184,640/1,278,463,342.80
  6. Step 6: Final answer
    x = 1,297,822,231.80

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Double scale
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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.