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Finding the Fourth Proportional to 711,230.73, 981,497.85 and 388,940.76

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Solution

The fourth proportional to 711,230.73, 981,497.85 and 388,940.76 is: 536,737.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,230.73 : 981,497.85 = 388,940.76 : x
  2. Step 2: Convert to fraction form
    711,230.73/981,497.85 = 388,940.76/x
  3. Step 3: Cross multiply
    711,230.73x = 981,497.85 × 388,940.76
  4. Step 4: Simplify right side
    711,230.73x = 381,744,519,717.37
  5. Step 5: Solve for x
    x = 381,744,519,717.37/711,230.73
  6. Step 6: Final answer
    x = 536,737.94

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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.