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Finding the Fourth Proportional to 722,335.73, 996,795.72 and 395,643.49

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Solution

The fourth proportional to 722,335.73, 996,795.72 and 395,643.49 is: 545,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,335.73 : 996,795.72 = 395,643.49 : x
  2. Step 2: Convert to fraction form
    722,335.73/996,795.72 = 395,643.49/x
  3. Step 3: Cross multiply
    722,335.73x = 996,795.72 × 395,643.49
  4. Step 4: Simplify right side
    722,335.73x = 394,375,734,985.87
  5. Step 5: Solve for x
    x = 394,375,734,985.87/722,335.73
  6. Step 6: Final answer
    x = 545,972.91

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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.