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Finding the Fourth Proportional to 511,442.70, 767,636.73 and 258,900.42

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Solution

The fourth proportional to 511,442.70, 767,636.73 and 258,900.42 is: 388,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,442.70 : 767,636.73 = 258,900.42 : x
  2. Step 2: Convert to fraction form
    511,442.70/767,636.73 = 258,900.42/x
  3. Step 3: Cross multiply
    511,442.70x = 767,636.73 × 258,900.42
  4. Step 4: Simplify right side
    511,442.70x = 198,741,471,804.43
  5. Step 5: Solve for x
    x = 198,741,471,804.43/511,442.70
  6. Step 6: Final answer
    x = 388,589.91

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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.