Home / 678,433.86-1,017,686.79-205,107.14

Finding the Fourth Proportional to 678,433.86, 1,017,686.79 and 205,107.14

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Solution

The fourth proportional to 678,433.86, 1,017,686.79 and 205,107.14 is: 307,671.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,433.86 : 1,017,686.79 = 205,107.14 : x
  2. Step 2: Convert to fraction form
    678,433.86/1,017,686.79 = 205,107.14/x
  3. Step 3: Cross multiply
    678,433.86x = 1,017,686.79 × 205,107.14
  4. Step 4: Simplify right side
    678,433.86x = 208,734,826,912.68
  5. Step 5: Solve for x
    x = 208,734,826,912.68/678,433.86
  6. Step 6: Final answer
    x = 307,671.59

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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.