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Finding the Fourth Proportional to 665,187.54, 917,957.25 and 363,383.70

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Solution

The fourth proportional to 665,187.54, 917,957.25 and 363,383.70 is: 501,468.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,187.54 : 917,957.25 = 363,383.70 : x
  2. Step 2: Convert to fraction form
    665,187.54/917,957.25 = 363,383.70/x
  3. Step 3: Cross multiply
    665,187.54x = 917,957.25 × 363,383.70
  4. Step 4: Simplify right side
    665,187.54x = 333,570,701,946.83
  5. Step 5: Solve for x
    x = 333,570,701,946.83/665,187.54
  6. Step 6: Final answer
    x = 501,468.66

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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.