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Finding the Fourth Proportional to 486,665.69, 729,998.33 and 354,387.69

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Solution

The fourth proportional to 486,665.69, 729,998.33 and 354,387.69 is: 531,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,665.69 : 729,998.33 = 354,387.69 : x
  2. Step 2: Convert to fraction form
    486,665.69/729,998.33 = 354,387.69/x
  3. Step 3: Cross multiply
    486,665.69x = 729,998.33 × 354,387.69
  4. Step 4: Simplify right side
    486,665.69x = 258,702,420,100.62
  5. Step 5: Solve for x
    x = 258,702,420,100.62/486,665.69
  6. Step 6: Final answer
    x = 531,581.39

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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.