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Finding the Fourth Proportional to 657,279.36, 907,046.12 and 355,473.36

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Solution

The fourth proportional to 657,279.36, 907,046.12 and 355,473.36 is: 490,553.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,279.36 : 907,046.12 = 355,473.36 : x
  2. Step 2: Convert to fraction form
    657,279.36/907,046.12 = 355,473.36/x
  3. Step 3: Cross multiply
    657,279.36x = 907,046.12 × 355,473.36
  4. Step 4: Simplify right side
    657,279.36x = 322,430,730,174.00
  5. Step 5: Solve for x
    x = 322,430,730,174.00/657,279.36
  6. Step 6: Final answer
    x = 490,553.56

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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.