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Finding the Fourth Proportional to 866,630.72, 1,299,681.21 and 305,534

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Solution

The fourth proportional to 866,630.72, 1,299,681.21 and 305,534 is: 458,207.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,630.72 : 1,299,681.21 = 305,534 : x
  2. Step 2: Convert to fraction form
    866,630.72/1,299,681.21 = 305,534/x
  3. Step 3: Cross multiply
    866,630.72x = 1,299,681.21 × 305,534
  4. Step 4: Simplify right side
    866,630.72x = 397,096,798,816.14
  5. Step 5: Solve for x
    x = 397,096,798,816.14/866,630.72
  6. Step 6: Final answer
    x = 458,207.62

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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.