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Finding the Fourth Proportional to 605,661.20, 908,491.80 and 511,182.80

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Solution

The fourth proportional to 605,661.20, 908,491.80 and 511,182.80 is: 766,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,661.20 : 908,491.80 = 511,182.80 : x
  2. Step 2: Convert to fraction form
    605,661.20/908,491.80 = 511,182.80/x
  3. Step 3: Cross multiply
    605,661.20x = 908,491.80 × 511,182.80
  4. Step 4: Simplify right side
    605,661.20x = 464,405,382,101.04
  5. Step 5: Solve for x
    x = 464,405,382,101.04/605,661.20
  6. Step 6: Final answer
    x = 766,774.20

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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.