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Finding the Fourth Proportional to 484,124.73, 667,716.77 and 312,070.71

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Solution

The fourth proportional to 484,124.73, 667,716.77 and 312,070.71 is: 430,415.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,124.73 : 667,716.77 = 312,070.71 : x
  2. Step 2: Convert to fraction form
    484,124.73/667,716.77 = 312,070.71/x
  3. Step 3: Cross multiply
    484,124.73x = 667,716.77 × 312,070.71
  4. Step 4: Simplify right side
    484,124.73x = 208,374,844,932.45
  5. Step 5: Solve for x
    x = 208,374,844,932.45/484,124.73
  6. Step 6: Final answer
    x = 430,415.62

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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.