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Finding the Fourth Proportional to 839,028.64, 1,157,978 and 476,542.88

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Solution

The fourth proportional to 839,028.64, 1,157,978 and 476,542.88 is: 657,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,028.64 : 1,157,978 = 476,542.88 : x
  2. Step 2: Convert to fraction form
    839,028.64/1,157,978 = 476,542.88/x
  3. Step 3: Cross multiply
    839,028.64x = 1,157,978 × 476,542.88
  4. Step 4: Simplify right side
    839,028.64x = 551,826,171,096.64
  5. Step 5: Solve for x
    x = 551,826,171,096.64/839,028.64
  6. Step 6: Final answer
    x = 657,696.47

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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.