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Finding the Fourth Proportional to 644,523.96, 889,411.14 and 372,565.98

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Solution

The fourth proportional to 644,523.96, 889,411.14 and 372,565.98 is: 514,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,523.96 : 889,411.14 = 372,565.98 : x
  2. Step 2: Convert to fraction form
    644,523.96/889,411.14 = 372,565.98/x
  3. Step 3: Cross multiply
    644,523.96x = 889,411.14 × 372,565.98
  4. Step 4: Simplify right side
    644,523.96x = 331,364,332,997.02
  5. Step 5: Solve for x
    x = 331,364,332,997.02/644,523.96
  6. Step 6: Final answer
    x = 514,122.60

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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.