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Finding the Fourth Proportional to 707,662.26, 976,577.53 and 421,192.60

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Solution

The fourth proportional to 707,662.26, 976,577.53 and 421,192.60 is: 581,247.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,662.26 : 976,577.53 = 421,192.60 : x
  2. Step 2: Convert to fraction form
    707,662.26/976,577.53 = 421,192.60/x
  3. Step 3: Cross multiply
    707,662.26x = 976,577.53 × 421,192.60
  4. Step 4: Simplify right side
    707,662.26x = 411,327,228,962.28
  5. Step 5: Solve for x
    x = 411,327,228,962.28/707,662.26
  6. Step 6: Final answer
    x = 581,247.94

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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.