Home / 711,380.58-981,736.65-409,671.78

Finding the Fourth Proportional to 711,380.58, 981,736.65 and 409,671.78

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Solution

The fourth proportional to 711,380.58, 981,736.65 and 409,671.78 is: 565,365.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,380.58 : 981,736.65 = 409,671.78 : x
  2. Step 2: Convert to fraction form
    711,380.58/981,736.65 = 409,671.78/x
  3. Step 3: Cross multiply
    711,380.58x = 981,736.65 × 409,671.78
  4. Step 4: Simplify right side
    711,380.58x = 402,189,800,896.74
  5. Step 5: Solve for x
    x = 402,189,800,896.74/711,380.58
  6. Step 6: Final answer
    x = 565,365.17

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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.