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Finding the Fourth Proportional to 722,028.39, 996,395.53 and 395,335.47

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Solution

The fourth proportional to 722,028.39, 996,395.53 and 395,335.47 is: 545,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,028.39 : 996,395.53 = 395,335.47 : x
  2. Step 2: Convert to fraction form
    722,028.39/996,395.53 = 395,335.47/x
  3. Step 3: Cross multiply
    722,028.39x = 996,395.53 × 395,335.47
  4. Step 4: Simplify right side
    722,028.39x = 393,910,488,199.79
  5. Step 5: Solve for x
    x = 393,910,488,199.79/722,028.39
  6. Step 6: Final answer
    x = 545,560.94

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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.