Home / 711,505.06-981,876.66-389,215.07

Finding the Fourth Proportional to 711,505.06, 981,876.66 and 389,215.07

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Solution

The fourth proportional to 711,505.06, 981,876.66 and 389,215.07 is: 537,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,505.06 : 981,876.66 = 389,215.07 : x
  2. Step 2: Convert to fraction form
    711,505.06/981,876.66 = 389,215.07/x
  3. Step 3: Cross multiply
    711,505.06x = 981,876.66 × 389,215.07
  4. Step 4: Simplify right side
    711,505.06x = 382,161,196,884.09
  5. Step 5: Solve for x
    x = 382,161,196,884.09/711,505.06
  6. Step 6: Final answer
    x = 537,116.62

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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.