Home / 711,318.77-981,606.15-389,027.87

Finding the Fourth Proportional to 711,318.77, 981,606.15 and 389,027.87

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Solution

The fourth proportional to 711,318.77, 981,606.15 and 389,027.87 is: 536,850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,318.77 : 981,606.15 = 389,027.87 : x
  2. Step 2: Convert to fraction form
    711,318.77/981,606.15 = 389,027.87/x
  3. Step 3: Cross multiply
    711,318.77x = 981,606.15 × 389,027.87
  4. Step 4: Simplify right side
    711,318.77x = 381,872,149,713.40
  5. Step 5: Solve for x
    x = 381,872,149,713.40/711,318.77
  6. Step 6: Final answer
    x = 536,850.94

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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.