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Finding the Fourth Proportional to 646,016.45, 891,493.81 and 359,536.49

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Solution

The fourth proportional to 646,016.45, 891,493.81 and 359,536.49 is: 496,155.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,016.45 : 891,493.81 = 359,536.49 : x
  2. Step 2: Convert to fraction form
    646,016.45/891,493.81 = 359,536.49/x
  3. Step 3: Cross multiply
    646,016.45x = 891,493.81 × 359,536.49
  4. Step 4: Simplify right side
    646,016.45x = 320,524,555,304.13
  5. Step 5: Solve for x
    x = 320,524,555,304.13/646,016.45
  6. Step 6: Final answer
    x = 496,155.41

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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.