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Finding the Fourth Proportional to 452,958.39, 679,659 and 320,688.63

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Solution

The fourth proportional to 452,958.39, 679,659 and 320,688.63 is: 481,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,958.39 : 679,659 = 320,688.63 : x
  2. Step 2: Convert to fraction form
    452,958.39/679,659 = 320,688.63/x
  3. Step 3: Cross multiply
    452,958.39x = 679,659 × 320,688.63
  4. Step 4: Simplify right side
    452,958.39x = 217,958,913,577.17
  5. Step 5: Solve for x
    x = 217,958,913,577.17/452,958.39
  6. Step 6: Final answer
    x = 481,189.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.