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Finding the Fourth Proportional to 489,681.44, 733,832.40 and 389,396.60

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Solution

The fourth proportional to 489,681.44, 733,832.40 and 389,396.60 is: 583,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,681.44 : 733,832.40 = 389,396.60 : x
  2. Step 2: Convert to fraction form
    489,681.44/733,832.40 = 389,396.60/x
  3. Step 3: Cross multiply
    489,681.44x = 733,832.40 × 389,396.60
  4. Step 4: Simplify right side
    489,681.44x = 285,751,841,529.84
  5. Step 5: Solve for x
    x = 285,751,841,529.84/489,681.44
  6. Step 6: Final answer
    x = 583,546.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.