Home / 644,799.57-889,844.99-358,331.73

Finding the Fourth Proportional to 644,799.57, 889,844.99 and 358,331.73

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Solution

The fourth proportional to 644,799.57, 889,844.99 and 358,331.73 is: 494,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,799.57 : 889,844.99 = 358,331.73 : x
  2. Step 2: Convert to fraction form
    644,799.57/889,844.99 = 358,331.73/x
  3. Step 3: Cross multiply
    644,799.57x = 889,844.99 × 358,331.73
  4. Step 4: Simplify right side
    644,799.57x = 318,859,692,906.87
  5. Step 5: Solve for x
    x = 318,859,692,906.87/644,799.57
  6. Step 6: Final answer
    x = 494,509.78

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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.