Home / 711,217.66-981,497.43-405,287.47

Finding the Fourth Proportional to 711,217.66, 981,497.43 and 405,287.47

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Solution

The fourth proportional to 711,217.66, 981,497.43 and 405,287.47 is: 559,306.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,217.66 : 981,497.43 = 405,287.47 : x
  2. Step 2: Convert to fraction form
    711,217.66/981,497.43 = 405,287.47/x
  3. Step 3: Cross multiply
    711,217.66x = 981,497.43 × 405,287.47
  4. Step 4: Simplify right side
    711,217.66x = 397,788,610,216.20
  5. Step 5: Solve for x
    x = 397,788,610,216.20/711,217.66
  6. Step 6: Final answer
    x = 559,306.43

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1.5x scale

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.