Home / 644,274.38-889,110.70-357,821.30

Finding the Fourth Proportional to 644,274.38, 889,110.70 and 357,821.30

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Solution

The fourth proportional to 644,274.38, 889,110.70 and 357,821.30 is: 493,800.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,274.38 : 889,110.70 = 357,821.30 : x
  2. Step 2: Convert to fraction form
    644,274.38/889,110.70 = 357,821.30/x
  3. Step 3: Cross multiply
    644,274.38x = 889,110.70 × 357,821.30
  4. Step 4: Simplify right side
    644,274.38x = 318,142,746,517.91
  5. Step 5: Solve for x
    x = 318,142,746,517.91/644,274.38
  6. Step 6: Final answer
    x = 493,800.09

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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.