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Finding the Fourth Proportional to 666,285.50, 919,473.99 and 360,361.91

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Solution

The fourth proportional to 666,285.50, 919,473.99 and 360,361.91 is: 497,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,285.50 : 919,473.99 = 360,361.91 : x
  2. Step 2: Convert to fraction form
    666,285.50/919,473.99 = 360,361.91/x
  3. Step 3: Cross multiply
    666,285.50x = 919,473.99 × 360,361.91
  4. Step 4: Simplify right side
    666,285.50x = 331,343,403,231.72
  5. Step 5: Solve for x
    x = 331,343,403,231.72/666,285.50
  6. Step 6: Final answer
    x = 497,299.44

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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.