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Finding the Fourth Proportional to 722,327.90, 996,844.82 and 395,663.90

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Solution

The fourth proportional to 722,327.90, 996,844.82 and 395,663.90 is: 546,033.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,327.90 : 996,844.82 = 395,663.90 : x
  2. Step 2: Convert to fraction form
    722,327.90/996,844.82 = 395,663.90/x
  3. Step 3: Cross multiply
    722,327.90x = 996,844.82 × 395,663.90
  4. Step 4: Simplify right side
    722,327.90x = 394,415,502,213.45
  5. Step 5: Solve for x
    x = 394,415,502,213.45/722,327.90
  6. Step 6: Final answer
    x = 546,033.88

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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.