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Finding the Fourth Proportional to 656,893.70, 906,358.20 and 370,358.43

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Solution

The fourth proportional to 656,893.70, 906,358.20 and 370,358.43 is: 511,007.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,893.70 : 906,358.20 = 370,358.43 : x
  2. Step 2: Convert to fraction form
    656,893.70/906,358.20 = 370,358.43/x
  3. Step 3: Cross multiply
    656,893.70x = 906,358.20 × 370,358.43
  4. Step 4: Simplify right side
    656,893.70x = 335,677,399,969.63
  5. Step 5: Solve for x
    x = 335,677,399,969.63/656,893.70
  6. Step 6: Final answer
    x = 511,007.18

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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.