Home / 769,977.70-1,062,541.37-421,106.18

Finding the Fourth Proportional to 769,977.70, 1,062,541.37 and 421,106.18

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Solution

The fourth proportional to 769,977.70, 1,062,541.37 and 421,106.18 is: 581,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,977.70 : 1,062,541.37 = 421,106.18 : x
  2. Step 2: Convert to fraction form
    769,977.70/1,062,541.37 = 421,106.18/x
  3. Step 3: Cross multiply
    769,977.70x = 1,062,541.37 × 421,106.18
  4. Step 4: Simplify right side
    769,977.70x = 447,442,741,121.79
  5. Step 5: Solve for x
    x = 447,442,741,121.79/769,977.70
  6. Step 6: Final answer
    x = 581,111.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.