Home / 1,018,288.80-1,529,065.20-809,661.60

Finding the Fourth Proportional to 1,018,288.80, 1,529,065.20 and 809,661.60

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Solution

The fourth proportional to 1,018,288.80, 1,529,065.20 and 809,661.60 is: 1,215,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,288.80 : 1,529,065.20 = 809,661.60 : x
  2. Step 2: Convert to fraction form
    1,018,288.80/1,529,065.20 = 809,661.60/x
  3. Step 3: Cross multiply
    1,018,288.80x = 1,529,065.20 × 809,661.60
  4. Step 4: Simplify right side
    1,018,288.80x = 1,238,025,376,336.32
  5. Step 5: Solve for x
    x = 1,238,025,376,336.32/1,018,288.80
  6. Step 6: Final answer
    x = 1,215,790.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.