Home / 485,825.85-670,437.46-268,028.60

Finding the Fourth Proportional to 485,825.85, 670,437.46 and 268,028.60

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Solution

The fourth proportional to 485,825.85, 670,437.46 and 268,028.60 is: 369,878.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,825.85 : 670,437.46 = 268,028.60 : x
  2. Step 2: Convert to fraction form
    485,825.85/670,437.46 = 268,028.60/x
  3. Step 3: Cross multiply
    485,825.85x = 670,437.46 × 268,028.60
  4. Step 4: Simplify right side
    485,825.85x = 179,696,409,266.54
  5. Step 5: Solve for x
    x = 179,696,409,266.54/485,825.85
  6. Step 6: Final answer
    x = 369,878.24

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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.