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Finding the Fourth Proportional to 558,321.30, 770,477.63 and 303,672.42

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Solution

The fourth proportional to 558,321.30, 770,477.63 and 303,672.42 is: 419,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,321.30 : 770,477.63 = 303,672.42 : x
  2. Step 2: Convert to fraction form
    558,321.30/770,477.63 = 303,672.42/x
  3. Step 3: Cross multiply
    558,321.30x = 770,477.63 × 303,672.42
  4. Step 4: Simplify right side
    558,321.30x = 233,972,804,939.60
  5. Step 5: Solve for x
    x = 233,972,804,939.60/558,321.30
  6. Step 6: Final answer
    x = 419,064.80

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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.