Home / 685,539.24-946,053.80-394,990.21

Finding the Fourth Proportional to 685,539.24, 946,053.80 and 394,990.21

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Solution

The fourth proportional to 685,539.24, 946,053.80 and 394,990.21 is: 545,092.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,539.24 : 946,053.80 = 394,990.21 : x
  2. Step 2: Convert to fraction form
    685,539.24/946,053.80 = 394,990.21/x
  3. Step 3: Cross multiply
    685,539.24x = 946,053.80 × 394,990.21
  4. Step 4: Simplify right side
    685,539.24x = 373,681,989,133.30
  5. Step 5: Solve for x
    x = 373,681,989,133.30/685,539.24
  6. Step 6: Final answer
    x = 545,092.05

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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.