Home / 716,450.49-988,665.93-394,152.30

Finding the Fourth Proportional to 716,450.49, 988,665.93 and 394,152.30

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Solution

The fourth proportional to 716,450.49, 988,665.93 and 394,152.30 is: 543,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,450.49 : 988,665.93 = 394,152.30 : x
  2. Step 2: Convert to fraction form
    716,450.49/988,665.93 = 394,152.30/x
  3. Step 3: Cross multiply
    716,450.49x = 988,665.93 × 394,152.30
  4. Step 4: Simplify right side
    716,450.49x = 389,684,950,241.14
  5. Step 5: Solve for x
    x = 389,684,950,241.14/716,450.49
  6. Step 6: Final answer
    x = 543,910.51

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Double scale
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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.