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Finding the Fourth Proportional to 693,481.32, 956,887.78 and 421,502.44

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Solution

The fourth proportional to 693,481.32, 956,887.78 and 421,502.44 is: 581,602.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,481.32 : 956,887.78 = 421,502.44 : x
  2. Step 2: Convert to fraction form
    693,481.32/956,887.78 = 421,502.44/x
  3. Step 3: Cross multiply
    693,481.32x = 956,887.78 × 421,502.44
  4. Step 4: Simplify right side
    693,481.32x = 403,330,534,076.18
  5. Step 5: Solve for x
    x = 403,330,534,076.18/693,481.32
  6. Step 6: Final answer
    x = 581,602.59

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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.