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Finding the Fourth Proportional to 611,619.66, 843,909.23 and 353,404.22

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Solution

The fourth proportional to 611,619.66, 843,909.23 and 353,404.22 is: 487,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,619.66 : 843,909.23 = 353,404.22 : x
  2. Step 2: Convert to fraction form
    611,619.66/843,909.23 = 353,404.22/x
  3. Step 3: Cross multiply
    611,619.66x = 843,909.23 × 353,404.22
  4. Step 4: Simplify right side
    611,619.66x = 298,241,079,842.92
  5. Step 5: Solve for x
    x = 298,241,079,842.92/611,619.66
  6. Step 6: Final answer
    x = 487,625.07

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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.