Home / 711,217.64-981,497.42-405,287.48

Finding the Fourth Proportional to 711,217.64, 981,497.42 and 405,287.48

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Solution

The fourth proportional to 711,217.64, 981,497.42 and 405,287.48 is: 559,306.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,217.64 : 981,497.42 = 405,287.48 : x
  2. Step 2: Convert to fraction form
    711,217.64/981,497.42 = 405,287.48/x
  3. Step 3: Cross multiply
    711,217.64x = 981,497.42 × 405,287.48
  4. Step 4: Simplify right side
    711,217.64x = 397,788,615,978.30
  5. Step 5: Solve for x
    x = 397,788,615,978.30/711,217.64
  6. Step 6: Final answer
    x = 559,306.45

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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.