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Finding the Fourth Proportional to 643,097.12, 963,804.76 and 263,573.51

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Solution

The fourth proportional to 643,097.12, 963,804.76 and 263,573.51 is: 395,015.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,097.12 : 963,804.76 = 263,573.51 : x
  2. Step 2: Convert to fraction form
    643,097.12/963,804.76 = 263,573.51/x
  3. Step 3: Cross multiply
    643,097.12x = 963,804.76 × 263,573.51
  4. Step 4: Simplify right side
    643,097.12x = 254,033,398,069.95
  5. Step 5: Solve for x
    x = 254,033,398,069.95/643,097.12
  6. Step 6: Final answer
    x = 395,015.61

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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.