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Finding the Fourth Proportional to 656,898.90, 906,520.73 and 355,092.90

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Solution

The fourth proportional to 656,898.90, 906,520.73 and 355,092.90 is: 490,028.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,898.90 : 906,520.73 = 355,092.90 : x
  2. Step 2: Convert to fraction form
    656,898.90/906,520.73 = 355,092.90/x
  3. Step 3: Cross multiply
    656,898.90x = 906,520.73 × 355,092.90
  4. Step 4: Simplify right side
    656,898.90x = 321,899,073,150.35
  5. Step 5: Solve for x
    x = 321,899,073,150.35/656,898.90
  6. Step 6: Final answer
    x = 490,028.33

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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.