Home / 814,986.30-1,222,479.45-513,836.40

Finding the Fourth Proportional to 814,986.30, 1,222,479.45 and 513,836.40

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Solution

The fourth proportional to 814,986.30, 1,222,479.45 and 513,836.40 is: 770,754.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,986.30 : 1,222,479.45 = 513,836.40 : x
  2. Step 2: Convert to fraction form
    814,986.30/1,222,479.45 = 513,836.40/x
  3. Step 3: Cross multiply
    814,986.30x = 1,222,479.45 × 513,836.40
  4. Step 4: Simplify right side
    814,986.30x = 628,154,439,661.98
  5. Step 5: Solve for x
    x = 628,154,439,661.98/814,986.30
  6. Step 6: Final answer
    x = 770,754.60

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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.