Home / 879,261.60-1,318,867.68-280,258.68

Finding the Fourth Proportional to 879,261.60, 1,318,867.68 and 280,258.68

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Solution

The fourth proportional to 879,261.60, 1,318,867.68 and 280,258.68 is: 420,380.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,261.60 : 1,318,867.68 = 280,258.68 : x
  2. Step 2: Convert to fraction form
    879,261.60/1,318,867.68 = 280,258.68/x
  3. Step 3: Cross multiply
    879,261.60x = 1,318,867.68 × 280,258.68
  4. Step 4: Simplify right side
    879,261.60x = 369,624,115,091.46
  5. Step 5: Solve for x
    x = 369,624,115,091.46/879,261.60
  6. Step 6: Final answer
    x = 420,380.14

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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.