Home / 789,961.07-1,090,154.09-427,392.72

Finding the Fourth Proportional to 789,961.07, 1,090,154.09 and 427,392.72

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Solution

The fourth proportional to 789,961.07, 1,090,154.09 and 427,392.72 is: 589,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,961.07 : 1,090,154.09 = 427,392.72 : x
  2. Step 2: Convert to fraction form
    789,961.07/1,090,154.09 = 427,392.72/x
  3. Step 3: Cross multiply
    789,961.07x = 1,090,154.09 × 427,392.72
  4. Step 4: Simplify right side
    789,961.07x = 465,923,922,812.71
  5. Step 5: Solve for x
    x = 465,923,922,812.71/789,961.07
  6. Step 6: Final answer
    x = 589,806.18

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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.