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Finding the Fourth Proportional to 483,089.46, 666,745.45 and 279,258.54

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Solution

The fourth proportional to 483,089.46, 666,745.45 and 279,258.54 is: 385,424.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,089.46 : 666,745.45 = 279,258.54 : x
  2. Step 2: Convert to fraction form
    483,089.46/666,745.45 = 279,258.54/x
  3. Step 3: Cross multiply
    483,089.46x = 666,745.45 × 279,258.54
  4. Step 4: Simplify right side
    483,089.46x = 186,194,360,918.64
  5. Step 5: Solve for x
    x = 186,194,360,918.64/483,089.46
  6. Step 6: Final answer
    x = 385,424.18

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1.5x scale

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.