Home / 684,889.77-945,065.07-394,596.30

Finding the Fourth Proportional to 684,889.77, 945,065.07 and 394,596.30

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Solution

The fourth proportional to 684,889.77, 945,065.07 and 394,596.30 is: 544,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,889.77 : 945,065.07 = 394,596.30 : x
  2. Step 2: Convert to fraction form
    684,889.77/945,065.07 = 394,596.30/x
  3. Step 3: Cross multiply
    684,889.77x = 945,065.07 × 394,596.30
  4. Step 4: Simplify right side
    684,889.77x = 372,919,179,881.24
  5. Step 5: Solve for x
    x = 372,919,179,881.24/684,889.77
  6. Step 6: Final answer
    x = 544,495.18

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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.