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Finding the Fourth Proportional to 711,934, 982,224.63 and 405,789.55

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Solution

The fourth proportional to 711,934, 982,224.63 and 405,789.55 is: 559,850.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,934 : 982,224.63 = 405,789.55 : x
  2. Step 2: Convert to fraction form
    711,934/982,224.63 = 405,789.55/x
  3. Step 3: Cross multiply
    711,934x = 982,224.63 × 405,789.55
  4. Step 4: Simplify right side
    711,934x = 398,576,490,606.62
  5. Step 5: Solve for x
    x = 398,576,490,606.62/711,934
  6. Step 6: Final answer
    x = 559,850.34

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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.