Home / 823,839.63-1,234,980.28-621,121.20

Finding the Fourth Proportional to 823,839.63, 1,234,980.28 and 621,121.20

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Solution

The fourth proportional to 823,839.63, 1,234,980.28 and 621,121.20 is: 931,094.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,839.63 : 1,234,980.28 = 621,121.20 : x
  2. Step 2: Convert to fraction form
    823,839.63/1,234,980.28 = 621,121.20/x
  3. Step 3: Cross multiply
    823,839.63x = 1,234,980.28 × 621,121.20
  4. Step 4: Simplify right side
    823,839.63x = 767,072,433,489.94
  5. Step 5: Solve for x
    x = 767,072,433,489.94/823,839.63
  6. Step 6: Final answer
    x = 931,094.36

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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.