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Finding the Fourth Proportional to 644,069.38, 888,774.62 and 357,589.38

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Solution

The fourth proportional to 644,069.38, 888,774.62 and 357,589.38 is: 493,450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,069.38 : 888,774.62 = 357,589.38 : x
  2. Step 2: Convert to fraction form
    644,069.38/888,774.62 = 357,589.38/x
  3. Step 3: Cross multiply
    644,069.38x = 888,774.62 × 357,589.38
  4. Step 4: Simplify right side
    644,069.38x = 317,816,365,325.54
  5. Step 5: Solve for x
    x = 317,816,365,325.54/644,069.38
  6. Step 6: Final answer
    x = 493,450.51

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1.5x scale

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.