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Finding the Fourth Proportional to 611,189.51, 843,494.89 and 356,622.71

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Solution

The fourth proportional to 611,189.51, 843,494.89 and 356,622.71 is: 492,170.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,189.51 : 843,494.89 = 356,622.71 : x
  2. Step 2: Convert to fraction form
    611,189.51/843,494.89 = 356,622.71/x
  3. Step 3: Cross multiply
    611,189.51x = 843,494.89 × 356,622.71
  4. Step 4: Simplify right side
    611,189.51x = 300,809,433,542.95
  5. Step 5: Solve for x
    x = 300,809,433,542.95/611,189.51
  6. Step 6: Final answer
    x = 492,170.48

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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.