Home / 728,187.84-1,004,933.16-405,900.24

Finding the Fourth Proportional to 728,187.84, 1,004,933.16 and 405,900.24

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Solution

The fourth proportional to 728,187.84, 1,004,933.16 and 405,900.24 is: 560,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,187.84 : 1,004,933.16 = 405,900.24 : x
  2. Step 2: Convert to fraction form
    728,187.84/1,004,933.16 = 405,900.24/x
  3. Step 3: Cross multiply
    728,187.84x = 1,004,933.16 × 405,900.24
  4. Step 4: Simplify right side
    728,187.84x = 407,902,610,827.96
  5. Step 5: Solve for x
    x = 407,902,610,827.96/728,187.84
  6. Step 6: Final answer
    x = 560,161.25

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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.