Home / 680,942.20-1,021,413.30-629,766.40

Finding the Fourth Proportional to 680,942.20, 1,021,413.30 and 629,766.40

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Solution

The fourth proportional to 680,942.20, 1,021,413.30 and 629,766.40 is: 944,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,942.20 : 1,021,413.30 = 629,766.40 : x
  2. Step 2: Convert to fraction form
    680,942.20/1,021,413.30 = 629,766.40/x
  3. Step 3: Cross multiply
    680,942.20x = 1,021,413.30 × 629,766.40
  4. Step 4: Simplify right side
    680,942.20x = 643,251,776,853.12
  5. Step 5: Solve for x
    x = 643,251,776,853.12/680,942.20
  6. Step 6: Final answer
    x = 944,649.60

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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.