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Finding the Fourth Proportional to 979,810.40, 1,469,808 and 380,817.44

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Solution

The fourth proportional to 979,810.40, 1,469,808 and 380,817.44 is: 571,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,810.40 : 1,469,808 = 380,817.44 : x
  2. Step 2: Convert to fraction form
    979,810.40/1,469,808 = 380,817.44/x
  3. Step 3: Cross multiply
    979,810.40x = 1,469,808 × 380,817.44
  4. Step 4: Simplify right side
    979,810.40x = 559,728,519,851.52
  5. Step 5: Solve for x
    x = 559,728,519,851.52/979,810.40
  6. Step 6: Final answer
    x = 571,262.07

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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.