Home / 644,469.96-889,225.38-389,815.68

Finding the Fourth Proportional to 644,469.96, 889,225.38 and 389,815.68

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Solution

The fourth proportional to 644,469.96, 889,225.38 and 389,815.68 is: 537,859.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,469.96 : 889,225.38 = 389,815.68 : x
  2. Step 2: Convert to fraction form
    644,469.96/889,225.38 = 389,815.68/x
  3. Step 3: Cross multiply
    644,469.96x = 889,225.38 × 389,815.68
  4. Step 4: Simplify right side
    644,469.96x = 346,633,996,177.96
  5. Step 5: Solve for x
    x = 346,633,996,177.96/644,469.96
  6. Step 6: Final answer
    x = 537,859.04

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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.