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Finding the Fourth Proportional to 505,479.80, 758,326.62 and 189,939.44

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Solution

The fourth proportional to 505,479.80, 758,326.62 and 189,939.44 is: 284,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,479.80 : 758,326.62 = 189,939.44 : x
  2. Step 2: Convert to fraction form
    505,479.80/758,326.62 = 189,939.44/x
  3. Step 3: Cross multiply
    505,479.80x = 758,326.62 × 189,939.44
  4. Step 4: Simplify right side
    505,479.80x = 144,036,133,539.89
  5. Step 5: Solve for x
    x = 144,036,133,539.89/505,479.80
  6. Step 6: Final answer
    x = 284,949.34

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1.5x scale

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.