Home / 711,053.64-981,263.33-388,764.11

Finding the Fourth Proportional to 711,053.64, 981,263.33 and 388,764.11

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Solution

The fourth proportional to 711,053.64, 981,263.33 and 388,764.11 is: 536,499.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,053.64 : 981,263.33 = 388,764.11 : x
  2. Step 2: Convert to fraction form
    711,053.64/981,263.33 = 388,764.11/x
  3. Step 3: Cross multiply
    711,053.64x = 981,263.33 × 388,764.11
  4. Step 4: Simplify right side
    711,053.64x = 381,479,965,163.09
  5. Step 5: Solve for x
    x = 381,479,965,163.09/711,053.64
  6. Step 6: Final answer
    x = 536,499.56

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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.