Home / 680,361,993.03-938,946,739.05-412,449,117.51

Finding the Fourth Proportional to 680,361,993.03, 938,946,739.05 and 412,449,117.51

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Solution

The fourth proportional to 680,361,993.03, 938,946,739.05 and 412,449,117.51 is: 569,208,388.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,361,993.03 : 938,946,739.05 = 412,449,117.51 : x
  2. Step 2: Convert to fraction form
    680,361,993.03/938,946,739.05 = 412,449,117.51/x
  3. Step 3: Cross multiply
    680,361,993.03x = 938,946,739.05 × 412,449,117.51
  4. Step 4: Simplify right side
    680,361,993.03x = 387,267,753,910,064,704
  5. Step 5: Solve for x
    x = 387,267,753,910,064,704/680,361,993.03
  6. Step 6: Final answer
    x = 569,208,388.88

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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.