Home / 647,999.08-972,027.90-198,687.16

Finding the Fourth Proportional to 647,999.08, 972,027.90 and 198,687.16

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Solution

The fourth proportional to 647,999.08, 972,027.90 and 198,687.16 is: 298,039.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,999.08 : 972,027.90 = 198,687.16 : x
  2. Step 2: Convert to fraction form
    647,999.08/972,027.90 = 198,687.16/x
  3. Step 3: Cross multiply
    647,999.08x = 972,027.90 × 198,687.16
  4. Step 4: Simplify right side
    647,999.08x = 193,129,462,891.76
  5. Step 5: Solve for x
    x = 193,129,462,891.76/647,999.08
  6. Step 6: Final answer
    x = 298,039.72

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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.