Home / 787,912.40-1,181,878.20-255,429.20

Finding the Fourth Proportional to 787,912.40, 1,181,878.20 and 255,429.20

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Solution

The fourth proportional to 787,912.40, 1,181,878.20 and 255,429.20 is: 383,146.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,912.40 : 1,181,878.20 = 255,429.20 : x
  2. Step 2: Convert to fraction form
    787,912.40/1,181,878.20 = 255,429.20/x
  3. Step 3: Cross multiply
    787,912.40x = 1,181,878.20 × 255,429.20
  4. Step 4: Simplify right side
    787,912.40x = 301,886,203,123.44
  5. Step 5: Solve for x
    x = 301,886,203,123.44/787,912.40
  6. Step 6: Final answer
    x = 383,146.91

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1.5x scale

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.