Home / 644,734.42-889,742.37-358,249.30

Finding the Fourth Proportional to 644,734.42, 889,742.37 and 358,249.30

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Solution

The fourth proportional to 644,734.42, 889,742.37 and 358,249.30 is: 494,388.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,734.42 : 889,742.37 = 358,249.30 : x
  2. Step 2: Convert to fraction form
    644,734.42/889,742.37 = 358,249.30/x
  3. Step 3: Cross multiply
    644,734.42x = 889,742.37 × 358,249.30
  4. Step 4: Simplify right side
    644,734.42x = 318,749,581,232.84
  5. Step 5: Solve for x
    x = 318,749,581,232.84/644,734.42
  6. Step 6: Final answer
    x = 494,388.96

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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.