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Finding the Fourth Proportional to 656,991.77, 906,640.17 and 370,604.12

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Solution

The fourth proportional to 656,991.77, 906,640.17 and 370,604.12 is: 511,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,991.77 : 906,640.17 = 370,604.12 : x
  2. Step 2: Convert to fraction form
    656,991.77/906,640.17 = 370,604.12/x
  3. Step 3: Cross multiply
    656,991.77x = 906,640.17 × 370,604.12
  4. Step 4: Simplify right side
    656,991.77x = 336,004,582,359.50
  5. Step 5: Solve for x
    x = 336,004,582,359.50/656,991.77
  6. Step 6: Final answer
    x = 511,428.91

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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.