Home / 1,218,752,738.92-1,681,873,521.06-661,831,195.24

Finding the Fourth Proportional to 1,218,752,738.92, 1,681,873,521.06 and 661,831,195.24

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Solution

The fourth proportional to 1,218,752,738.92, 1,681,873,521.06 and 661,831,195.24 is: 913,324,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,752,738.92 : 1,681,873,521.06 = 661,831,195.24 : x
  2. Step 2: Convert to fraction form
    1,218,752,738.92/1,681,873,521.06 = 661,831,195.24/x
  3. Step 3: Cross multiply
    1,218,752,738.92x = 1,681,873,521.06 × 661,831,195.24
  4. Step 4: Simplify right side
    1,218,752,738.92x = 1,113,116,362,685,647,104
  5. Step 5: Solve for x
    x = 1,113,116,362,685,647,104/1,218,752,738.92
  6. Step 6: Final answer
    x = 913,324,193.78

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.