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Finding the Fourth Proportional to 657,044.75, 906,723.11 and 355,238.75

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Solution

The fourth proportional to 657,044.75, 906,723.11 and 355,238.75 is: 490,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,044.75 : 906,723.11 = 355,238.75 : x
  2. Step 2: Convert to fraction form
    657,044.75/906,723.11 = 355,238.75/x
  3. Step 3: Cross multiply
    657,044.75x = 906,723.11 × 355,238.75
  4. Step 4: Simplify right side
    657,044.75x = 322,103,187,347.42
  5. Step 5: Solve for x
    x = 322,103,187,347.42/657,044.75
  6. Step 6: Final answer
    x = 490,230.21

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1.5x scale

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.