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Finding the Fourth Proportional to 657,025.28, 906,694.80 and 355,219.28

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Solution

The fourth proportional to 657,025.28, 906,694.80 and 355,219.28 is: 490,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,025.28 : 906,694.80 = 355,219.28 : x
  2. Step 2: Convert to fraction form
    657,025.28/906,694.80 = 355,219.28/x
  3. Step 3: Cross multiply
    657,025.28x = 906,694.80 × 355,219.28
  4. Step 4: Simplify right side
    657,025.28x = 322,075,474,035.74
  5. Step 5: Solve for x
    x = 322,075,474,035.74/657,025.28
  6. Step 6: Final answer
    x = 490,202.56

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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.