Home / 711,027.96-981,208.14-388,739.32

Finding the Fourth Proportional to 711,027.96, 981,208.14 and 388,739.32

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Solution

The fourth proportional to 711,027.96, 981,208.14 and 388,739.32 is: 536,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,027.96 : 981,208.14 = 388,739.32 : x
  2. Step 2: Convert to fraction form
    711,027.96/981,208.14 = 388,739.32/x
  3. Step 3: Cross multiply
    711,027.96x = 981,208.14 × 388,739.32
  4. Step 4: Simplify right side
    711,027.96x = 381,434,185,122.07
  5. Step 5: Solve for x
    x = 381,434,185,122.07/711,027.96
  6. Step 6: Final answer
    x = 536,454.55

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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.