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Finding the Fourth Proportional to 635,636.64, 876,961.32 and 363,605.40

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Solution

The fourth proportional to 635,636.64, 876,961.32 and 363,605.40 is: 501,651.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,636.64 : 876,961.32 = 363,605.40 : x
  2. Step 2: Convert to fraction form
    635,636.64/876,961.32 = 363,605.40/x
  3. Step 3: Cross multiply
    635,636.64x = 876,961.32 × 363,605.40
  4. Step 4: Simplify right side
    635,636.64x = 318,867,871,543.13
  5. Step 5: Solve for x
    x = 318,867,871,543.13/635,636.64
  6. Step 6: Final answer
    x = 501,651.18

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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.