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Finding the Fourth Proportional to 665,192.04, 917,963.44 and 363,388.20

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Solution

The fourth proportional to 665,192.04, 917,963.44 and 363,388.20 is: 501,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,192.04 : 917,963.44 = 363,388.20 : x
  2. Step 2: Convert to fraction form
    665,192.04/917,963.44 = 363,388.20/x
  3. Step 3: Cross multiply
    665,192.04x = 917,963.44 × 363,388.20
  4. Step 4: Simplify right side
    665,192.04x = 333,577,082,127.41
  5. Step 5: Solve for x
    x = 333,577,082,127.41/665,192.04
  6. Step 6: Final answer
    x = 501,474.86

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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.