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Finding the Fourth Proportional to 707,650.10, 976,558.20 and 385,361.54

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Solution

The fourth proportional to 707,650.10, 976,558.20 and 385,361.54 is: 531,799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,650.10 : 976,558.20 = 385,361.54 : x
  2. Step 2: Convert to fraction form
    707,650.10/976,558.20 = 385,361.54/x
  3. Step 3: Cross multiply
    707,650.10x = 976,558.20 × 385,361.54
  4. Step 4: Simplify right side
    707,650.10x = 376,327,971,851.63
  5. Step 5: Solve for x
    x = 376,327,971,851.63/707,650.10
  6. Step 6: Final answer
    x = 531,799.50

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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.