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Finding the Fourth Proportional to 718,433.56, 991,504.83 and 412,550.02

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Solution

The fourth proportional to 718,433.56, 991,504.83 and 412,550.02 is: 569,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,433.56 : 991,504.83 = 412,550.02 : x
  2. Step 2: Convert to fraction form
    718,433.56/991,504.83 = 412,550.02/x
  3. Step 3: Cross multiply
    718,433.56x = 991,504.83 × 412,550.02
  4. Step 4: Simplify right side
    718,433.56x = 409,045,337,446.60
  5. Step 5: Solve for x
    x = 409,045,337,446.60/718,433.56
  6. Step 6: Final answer
    x = 569,357.22

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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.