Home / 728,115.34-1,004,803.83-405,845.87

Finding the Fourth Proportional to 728,115.34, 1,004,803.83 and 405,845.87

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Solution

The fourth proportional to 728,115.34, 1,004,803.83 and 405,845.87 is: 560,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,115.34 : 1,004,803.83 = 405,845.87 : x
  2. Step 2: Convert to fraction form
    728,115.34/1,004,803.83 = 405,845.87/x
  3. Step 3: Cross multiply
    728,115.34x = 1,004,803.83 × 405,845.87
  4. Step 4: Simplify right side
    728,115.34x = 407,795,484,565.68
  5. Step 5: Solve for x
    x = 407,795,484,565.68/728,115.34
  6. Step 6: Final answer
    x = 560,069.90

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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.