Home / 789,981.12-1,090,172.76-427,403.76

Finding the Fourth Proportional to 789,981.12, 1,090,172.76 and 427,403.76

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Solution

The fourth proportional to 789,981.12, 1,090,172.76 and 427,403.76 is: 589,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,981.12 : 1,090,172.76 = 427,403.76 : x
  2. Step 2: Convert to fraction form
    789,981.12/1,090,172.76 = 427,403.76/x
  3. Step 3: Cross multiply
    789,981.12x = 1,090,172.76 × 427,403.76
  4. Step 4: Simplify right side
    789,981.12x = 465,943,936,673.58
  5. Step 5: Solve for x
    x = 465,943,936,673.58/789,981.12
  6. Step 6: Final answer
    x = 589,816.55

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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.