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Finding the Fourth Proportional to 642,791.52, 963,825.84 and 263,607.84

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Solution

The fourth proportional to 642,791.52, 963,825.84 and 263,607.84 is: 395,263.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,791.52 : 963,825.84 = 263,607.84 : x
  2. Step 2: Convert to fraction form
    642,791.52/963,825.84 = 263,607.84/x
  3. Step 3: Cross multiply
    642,791.52x = 963,825.84 × 263,607.84
  4. Step 4: Simplify right side
    642,791.52x = 254,072,047,818.59
  5. Step 5: Solve for x
    x = 254,072,047,818.59/642,791.52
  6. Step 6: Final answer
    x = 395,263.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.