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Finding the Fourth Proportional to 923,744.64, 1,274,803.20 and 521,328

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Solution

The fourth proportional to 923,744.64, 1,274,803.20 and 521,328 is: 719,452.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,744.64 : 1,274,803.20 = 521,328 : x
  2. Step 2: Convert to fraction form
    923,744.64/1,274,803.20 = 521,328/x
  3. Step 3: Cross multiply
    923,744.64x = 1,274,803.20 × 521,328
  4. Step 4: Simplify right side
    923,744.64x = 664,590,602,649.60
  5. Step 5: Solve for x
    x = 664,590,602,649.60/923,744.64
  6. Step 6: Final answer
    x = 719,452.73

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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.