Home / 678,027.12-1,015,782.32-485,504.16

Finding the Fourth Proportional to 678,027.12, 1,015,782.32 and 485,504.16

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Solution

The fourth proportional to 678,027.12, 1,015,782.32 and 485,504.16 is: 727,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,027.12 : 1,015,782.32 = 485,504.16 : x
  2. Step 2: Convert to fraction form
    678,027.12/1,015,782.32 = 485,504.16/x
  3. Step 3: Cross multiply
    678,027.12x = 1,015,782.32 × 485,504.16
  4. Step 4: Simplify right side
    678,027.12x = 493,166,542,014.45
  5. Step 5: Solve for x
    x = 493,166,542,014.45/678,027.12
  6. Step 6: Final answer
    x = 727,355.19

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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.