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Finding the Fourth Proportional to 644,506.44, 889,320.15 and 372,521.94

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Solution

The fourth proportional to 644,506.44, 889,320.15 and 372,521.94 is: 514,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,506.44 : 889,320.15 = 372,521.94 : x
  2. Step 2: Convert to fraction form
    644,506.44/889,320.15 = 372,521.94/x
  3. Step 3: Cross multiply
    644,506.44x = 889,320.15 × 372,521.94
  4. Step 4: Simplify right side
    644,506.44x = 331,291,267,559.09
  5. Step 5: Solve for x
    x = 331,291,267,559.09/644,506.44
  6. Step 6: Final answer
    x = 514,023.21

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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.