Home / 711,041.06-981,236.68-388,751.18

Finding the Fourth Proportional to 711,041.06, 981,236.68 and 388,751.18

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Solution

The fourth proportional to 711,041.06, 981,236.68 and 388,751.18 is: 536,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,041.06 : 981,236.68 = 388,751.18 : x
  2. Step 2: Convert to fraction form
    711,041.06/981,236.68 = 388,751.18/x
  3. Step 3: Cross multiply
    711,041.06x = 981,236.68 × 388,751.18
  4. Step 4: Simplify right side
    711,041.06x = 381,456,917,209.28
  5. Step 5: Solve for x
    x = 381,456,917,209.28/711,041.06
  6. Step 6: Final answer
    x = 536,476.64

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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.