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Finding the Fourth Proportional to 665,086.50, 917,819.47 and 363,280.50

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Solution

The fourth proportional to 665,086.50, 917,819.47 and 363,280.50 is: 501,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,086.50 : 917,819.47 = 363,280.50 : x
  2. Step 2: Convert to fraction form
    665,086.50/917,819.47 = 363,280.50/x
  3. Step 3: Cross multiply
    665,086.50x = 917,819.47 × 363,280.50
  4. Step 4: Simplify right side
    665,086.50x = 333,425,916,425.44
  5. Step 5: Solve for x
    x = 333,425,916,425.44/665,086.50
  6. Step 6: Final answer
    x = 501,327.15

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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.