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Finding the Fourth Proportional to 483,265.85, 666,638.10 and 449,054.28

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Solution

The fourth proportional to 483,265.85, 666,638.10 and 449,054.28 is: 619,445.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,265.85 : 666,638.10 = 449,054.28 : x
  2. Step 2: Convert to fraction form
    483,265.85/666,638.10 = 449,054.28/x
  3. Step 3: Cross multiply
    483,265.85x = 666,638.10 × 449,054.28
  4. Step 4: Simplify right side
    483,265.85x = 299,356,692,016.07
  5. Step 5: Solve for x
    x = 299,356,692,016.07/483,265.85
  6. Step 6: Final answer
    x = 619,445.17

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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.