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Finding the Fourth Proportional to 878,293, 1,212,028.60 and 496,311.58

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Solution

The fourth proportional to 878,293, 1,212,028.60 and 496,311.58 is: 684,901.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,293 : 1,212,028.60 = 496,311.58 : x
  2. Step 2: Convert to fraction form
    878,293/1,212,028.60 = 496,311.58/x
  3. Step 3: Cross multiply
    878,293x = 1,212,028.60 × 496,311.58
  4. Step 4: Simplify right side
    878,293x = 601,543,829,471.19
  5. Step 5: Solve for x
    x = 601,543,829,471.19/878,293
  6. Step 6: Final answer
    x = 684,901.09

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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.