Home / 891,280.69-1,229,969.37-509,306.56

Finding the Fourth Proportional to 891,280.69, 1,229,969.37 and 509,306.56

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Solution

The fourth proportional to 891,280.69, 1,229,969.37 and 509,306.56 is: 702,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,280.69 : 1,229,969.37 = 509,306.56 : x
  2. Step 2: Convert to fraction form
    891,280.69/1,229,969.37 = 509,306.56/x
  3. Step 3: Cross multiply
    891,280.69x = 1,229,969.37 × 509,306.56
  4. Step 4: Simplify right side
    891,280.69x = 626,431,467,575.04
  5. Step 5: Solve for x
    x = 626,431,467,575.04/891,280.69
  6. Step 6: Final answer
    x = 702,844.21

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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.