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Finding the Fourth Proportional to 665,343, 918,173.34 and 363,537

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Solution

The fourth proportional to 665,343, 918,173.34 and 363,537 is: 501,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,343 : 918,173.34 = 363,537 : x
  2. Step 2: Convert to fraction form
    665,343/918,173.34 = 363,537/x
  3. Step 3: Cross multiply
    665,343x = 918,173.34 × 363,537
  4. Step 4: Simplify right side
    665,343x = 333,789,981,503.58
  5. Step 5: Solve for x
    x = 333,789,981,503.58/665,343
  6. Step 6: Final answer
    x = 501,681.06

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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.