Home / 627,640.55-940,739.09-289,971.84

Finding the Fourth Proportional to 627,640.55, 940,739.09 and 289,971.84

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Solution

The fourth proportional to 627,640.55, 940,739.09 and 289,971.84 is: 434,624.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,640.55 : 940,739.09 = 289,971.84 : x
  2. Step 2: Convert to fraction form
    627,640.55/940,739.09 = 289,971.84/x
  3. Step 3: Cross multiply
    627,640.55x = 940,739.09 × 289,971.84
  4. Step 4: Simplify right side
    627,640.55x = 272,787,843,437.37
  5. Step 5: Solve for x
    x = 272,787,843,437.37/627,640.55
  6. Step 6: Final answer
    x = 434,624.32

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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.