Home / 644,731.38-889,690.23-358,241.67

Finding the Fourth Proportional to 644,731.38, 889,690.23 and 358,241.67

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Solution

The fourth proportional to 644,731.38, 889,690.23 and 358,241.67 is: 494,351.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,731.38 : 889,690.23 = 358,241.67 : x
  2. Step 2: Convert to fraction form
    644,731.38/889,690.23 = 358,241.67/x
  3. Step 3: Cross multiply
    644,731.38x = 889,690.23 × 358,241.67
  4. Step 4: Simplify right side
    644,731.38x = 318,724,113,777.88
  5. Step 5: Solve for x
    x = 318,724,113,777.88/644,731.38
  6. Step 6: Final answer
    x = 494,351.79

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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.