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Finding the Fourth Proportional to 657,901.22, 907,906.41 and 356,095.22

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Solution

The fourth proportional to 657,901.22, 907,906.41 and 356,095.22 is: 491,412.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,901.22 : 907,906.41 = 356,095.22 : x
  2. Step 2: Convert to fraction form
    657,901.22/907,906.41 = 356,095.22/x
  3. Step 3: Cross multiply
    657,901.22x = 907,906.41 × 356,095.22
  4. Step 4: Simplify right side
    657,901.22x = 323,301,128,268.83
  5. Step 5: Solve for x
    x = 323,301,128,268.83/657,901.22
  6. Step 6: Final answer
    x = 491,412.88

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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.