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Finding the Fourth Proportional to 489,207.36, 732,651.03 and 387,678.96

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Solution

The fourth proportional to 489,207.36, 732,651.03 and 387,678.96 is: 580,599.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,207.36 : 732,651.03 = 387,678.96 : x
  2. Step 2: Convert to fraction form
    489,207.36/732,651.03 = 387,678.96/x
  3. Step 3: Cross multiply
    489,207.36x = 732,651.03 × 387,678.96
  4. Step 4: Simplify right side
    489,207.36x = 284,033,389,353.33
  5. Step 5: Solve for x
    x = 284,033,389,353.33/489,207.36
  6. Step 6: Final answer
    x = 580,599.17

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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.