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Finding the Fourth Proportional to 710,912.46, 981,056.97 and 388,622.70

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Solution

The fourth proportional to 710,912.46, 981,056.97 and 388,622.70 is: 536,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,912.46 : 981,056.97 = 388,622.70 : x
  2. Step 2: Convert to fraction form
    710,912.46/981,056.97 = 388,622.70/x
  3. Step 3: Cross multiply
    710,912.46x = 981,056.97 × 388,622.70
  4. Step 4: Simplify right side
    710,912.46x = 381,261,008,535.22
  5. Step 5: Solve for x
    x = 381,261,008,535.22/710,912.46
  6. Step 6: Final answer
    x = 536,298.11

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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.