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Finding the Fourth Proportional to 644,219.56, 888,958.02 and 376,103.08

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Solution

The fourth proportional to 644,219.56, 888,958.02 and 376,103.08 is: 518,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,219.56 : 888,958.02 = 376,103.08 : x
  2. Step 2: Convert to fraction form
    644,219.56/888,958.02 = 376,103.08/x
  3. Step 3: Cross multiply
    644,219.56x = 888,958.02 × 376,103.08
  4. Step 4: Simplify right side
    644,219.56x = 334,339,849,312.70
  5. Step 5: Solve for x
    x = 334,339,849,312.70/644,219.56
  6. Step 6: Final answer
    x = 518,984.32

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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.