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Finding the Fourth Proportional to 722,171.34, 996,611.94 and 395,498.07

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Solution

The fourth proportional to 722,171.34, 996,611.94 and 395,498.07 is: 545,795.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,171.34 : 996,611.94 = 395,498.07 : x
  2. Step 2: Convert to fraction form
    722,171.34/996,611.94 = 395,498.07/x
  3. Step 3: Cross multiply
    722,171.34x = 996,611.94 × 395,498.07
  4. Step 4: Simplify right side
    722,171.34x = 394,158,098,808.96
  5. Step 5: Solve for x
    x = 394,158,098,808.96/722,171.34
  6. Step 6: Final answer
    x = 545,795.82

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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.