Home / 728,111.03-1,004,797.88-405,841.56

Finding the Fourth Proportional to 728,111.03, 1,004,797.88 and 405,841.56

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Solution

The fourth proportional to 728,111.03, 1,004,797.88 and 405,841.56 is: 560,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,111.03 : 1,004,797.88 = 405,841.56 : x
  2. Step 2: Convert to fraction form
    728,111.03/1,004,797.88 = 405,841.56/x
  3. Step 3: Cross multiply
    728,111.03x = 1,004,797.88 × 405,841.56
  4. Step 4: Simplify right side
    728,111.03x = 407,788,734,828.60
  5. Step 5: Solve for x
    x = 407,788,734,828.60/728,111.03
  6. Step 6: Final answer
    x = 560,063.95

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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.