Home / 661,499,742.66-992,399,100.34-218,841,383.84

Finding the Fourth Proportional to 661,499,742.66, 992,399,100.34 and 218,841,383.84

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Solution

The fourth proportional to 661,499,742.66, 992,399,100.34 and 218,841,383.84 is: 328,311,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,499,742.66 : 992,399,100.34 = 218,841,383.84 : x
  2. Step 2: Convert to fraction form
    661,499,742.66/992,399,100.34 = 218,841,383.84/x
  3. Step 3: Cross multiply
    661,499,742.66x = 992,399,100.34 × 218,841,383.84
  4. Step 4: Simplify right side
    661,499,742.66x = 217,177,992,439,976,640
  5. Step 5: Solve for x
    x = 217,177,992,439,976,640/661,499,742.66
  6. Step 6: Final answer
    x = 328,311,529.75

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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.