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Finding the Fourth Proportional to 646,318.64, 891,955.14 and 359,832.44

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Solution

The fourth proportional to 646,318.64, 891,955.14 and 359,832.44 is: 496,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,318.64 : 891,955.14 = 359,832.44 : x
  2. Step 2: Convert to fraction form
    646,318.64/891,955.14 = 359,832.44/x
  3. Step 3: Cross multiply
    646,318.64x = 891,955.14 × 359,832.44
  4. Step 4: Simplify right side
    646,318.64x = 320,954,394,396.74
  5. Step 5: Solve for x
    x = 320,954,394,396.74/646,318.64
  6. Step 6: Final answer
    x = 496,588.49

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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.