Home / 661,692.24-912,976.11-389,738.79

Finding the Fourth Proportional to 661,692.24, 912,976.11 and 389,738.79

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Solution

The fourth proportional to 661,692.24, 912,976.11 and 389,738.79 is: 537,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,692.24 : 912,976.11 = 389,738.79 : x
  2. Step 2: Convert to fraction form
    661,692.24/912,976.11 = 389,738.79/x
  3. Step 3: Cross multiply
    661,692.24x = 912,976.11 × 389,738.79
  4. Step 4: Simplify right side
    661,692.24x = 355,822,204,410.31
  5. Step 5: Solve for x
    x = 355,822,204,410.31/661,692.24
  6. Step 6: Final answer
    x = 537,745.77

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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.