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Finding the Fourth Proportional to 711,062.82, 981,268.47 and 388,793.70

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Solution

The fourth proportional to 711,062.82, 981,268.47 and 388,793.70 is: 536,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,062.82 : 981,268.47 = 388,793.70 : x
  2. Step 2: Convert to fraction form
    711,062.82/981,268.47 = 388,793.70/x
  3. Step 3: Cross multiply
    711,062.82x = 981,268.47 × 388,793.70
  4. Step 4: Simplify right side
    711,062.82x = 381,510,999,144.64
  5. Step 5: Solve for x
    x = 381,510,999,144.64/711,062.82
  6. Step 6: Final answer
    x = 536,536.28

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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.