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Finding the Fourth Proportional to 722,120.94, 996,561.14 and 435,634.88

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Solution

The fourth proportional to 722,120.94, 996,561.14 and 435,634.88 is: 601,196.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,120.94 : 996,561.14 = 435,634.88 : x
  2. Step 2: Convert to fraction form
    722,120.94/996,561.14 = 435,634.88/x
  3. Step 3: Cross multiply
    722,120.94x = 996,561.14 × 435,634.88
  4. Step 4: Simplify right side
    722,120.94x = 434,136,785,475.58
  5. Step 5: Solve for x
    x = 434,136,785,475.58/722,120.94
  6. Step 6: Final answer
    x = 601,196.78

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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.