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Finding the Fourth Proportional to 644,586.60, 889,477.44 and 372,672.02

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Solution

The fourth proportional to 644,586.60, 889,477.44 and 372,672.02 is: 514,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,586.60 : 889,477.44 = 372,672.02 : x
  2. Step 2: Convert to fraction form
    644,586.60/889,477.44 = 372,672.02/x
  3. Step 3: Cross multiply
    644,586.60x = 889,477.44 × 372,672.02
  4. Step 4: Simplify right side
    644,586.60x = 331,483,354,309.23
  5. Step 5: Solve for x
    x = 331,483,354,309.23/644,586.60
  6. Step 6: Final answer
    x = 514,257.28

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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.