Home / 985,380.70-1,477,611.74-511,938.94

Finding the Fourth Proportional to 985,380.70, 1,477,611.74 and 511,938.94

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Solution

The fourth proportional to 985,380.70, 1,477,611.74 and 511,938.94 is: 767,669.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,380.70 : 1,477,611.74 = 511,938.94 : x
  2. Step 2: Convert to fraction form
    985,380.70/1,477,611.74 = 511,938.94/x
  3. Step 3: Cross multiply
    985,380.70x = 1,477,611.74 × 511,938.94
  4. Step 4: Simplify right side
    985,380.70x = 756,446,987,907.16
  5. Step 5: Solve for x
    x = 756,446,987,907.16/985,380.70
  6. Step 6: Final answer
    x = 767,669.78

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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.