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Finding the Fourth Proportional to 719,805.66, 1,080,372.70 and 365,068.80

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Solution

The fourth proportional to 719,805.66, 1,080,372.70 and 365,068.80 is: 547,940.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,805.66 : 1,080,372.70 = 365,068.80 : x
  2. Step 2: Convert to fraction form
    719,805.66/1,080,372.70 = 365,068.80/x
  3. Step 3: Cross multiply
    719,805.66x = 1,080,372.70 × 365,068.80
  4. Step 4: Simplify right side
    719,805.66x = 394,410,365,141.76
  5. Step 5: Solve for x
    x = 394,410,365,141.76/719,805.66
  6. Step 6: Final answer
    x = 547,940.07

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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.