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Finding the Fourth Proportional to 644,522.10, 889,441.47 and 358,034.82

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Solution

The fourth proportional to 644,522.10, 889,441.47 and 358,034.82 is: 494,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,522.10 : 889,441.47 = 358,034.82 : x
  2. Step 2: Convert to fraction form
    644,522.10/889,441.47 = 358,034.82/x
  3. Step 3: Cross multiply
    644,522.10x = 889,441.47 × 358,034.82
  4. Step 4: Simplify right side
    644,522.10x = 318,451,016,611.99
  5. Step 5: Solve for x
    x = 318,451,016,611.99/644,522.10
  6. Step 6: Final answer
    x = 494,088.59

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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.