Home / 787,910.40-1,181,875.20-255,427.20

Finding the Fourth Proportional to 787,910.40, 1,181,875.20 and 255,427.20

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Solution

The fourth proportional to 787,910.40, 1,181,875.20 and 255,427.20 is: 383,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,910.40 : 1,181,875.20 = 255,427.20 : x
  2. Step 2: Convert to fraction form
    787,910.40/1,181,875.20 = 255,427.20/x
  3. Step 3: Cross multiply
    787,910.40x = 1,181,875.20 × 255,427.20
  4. Step 4: Simplify right side
    787,910.40x = 301,883,073,085.44
  5. Step 5: Solve for x
    x = 301,883,073,085.44/787,910.40
  6. Step 6: Final answer
    x = 383,143.91

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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.