Home / 638,880.54-958,257.03-259,823.64

Finding the Fourth Proportional to 638,880.54, 958,257.03 and 259,823.64

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Solution

The fourth proportional to 638,880.54, 958,257.03 and 259,823.64 is: 389,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,880.54 : 958,257.03 = 259,823.64 : x
  2. Step 2: Convert to fraction form
    638,880.54/958,257.03 = 259,823.64/x
  3. Step 3: Cross multiply
    638,880.54x = 958,257.03 × 259,823.64
  4. Step 4: Simplify right side
    638,880.54x = 248,977,829,590.19
  5. Step 5: Solve for x
    x = 248,977,829,590.19/638,880.54
  6. Step 6: Final answer
    x = 389,709.52

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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.