Home / 1,245,517,221.60-1,868,275,832.40-786,870,079.20

Finding the Fourth Proportional to 1,245,517,221.60, 1,868,275,832.40 and 786,870,079.20

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Solution

The fourth proportional to 1,245,517,221.60, 1,868,275,832.40 and 786,870,079.20 is: 1,180,305,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,517,221.60 : 1,868,275,832.40 = 786,870,079.20 : x
  2. Step 2: Convert to fraction form
    1,245,517,221.60/1,868,275,832.40 = 786,870,079.20/x
  3. Step 3: Cross multiply
    1,245,517,221.60x = 1,868,275,832.40 × 786,870,079.20
  4. Step 4: Simplify right side
    1,245,517,221.60x = 1,470,090,352,208,034,048
  5. Step 5: Solve for x
    x = 1,470,090,352,208,034,048/1,245,517,221.60
  6. Step 6: Final answer
    x = 1,180,305,118.80

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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.