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Finding the Fourth Proportional to 665,732.07, 918,726.44 and 404,090.37

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Solution

The fourth proportional to 665,732.07, 918,726.44 and 404,090.37 is: 557,654.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,732.07 : 918,726.44 = 404,090.37 : x
  2. Step 2: Convert to fraction form
    665,732.07/918,726.44 = 404,090.37/x
  3. Step 3: Cross multiply
    665,732.07x = 918,726.44 × 404,090.37
  4. Step 4: Simplify right side
    665,732.07x = 371,248,505,047.93
  5. Step 5: Solve for x
    x = 371,248,505,047.93/665,732.07
  6. Step 6: Final answer
    x = 557,654.53

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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.