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Finding the Fourth Proportional to 657,906.73, 907,914 and 356,100.73

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Solution

The fourth proportional to 657,906.73, 907,914 and 356,100.73 is: 491,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,906.73 : 907,914 = 356,100.73 : x
  2. Step 2: Convert to fraction form
    657,906.73/907,914 = 356,100.73/x
  3. Step 3: Cross multiply
    657,906.73x = 907,914 × 356,100.73
  4. Step 4: Simplify right side
    657,906.73x = 323,308,838,177.22
  5. Step 5: Solve for x
    x = 323,308,838,177.22/657,906.73
  6. Step 6: Final answer
    x = 491,420.48

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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.