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Finding the Fourth Proportional to 652,238.55, 978,357.83 and 628,618.95

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Solution

The fourth proportional to 652,238.55, 978,357.83 and 628,618.95 is: 942,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,238.55 : 978,357.83 = 628,618.95 : x
  2. Step 2: Convert to fraction form
    652,238.55/978,357.83 = 628,618.95/x
  3. Step 3: Cross multiply
    652,238.55x = 978,357.83 × 628,618.95
  4. Step 4: Simplify right side
    652,238.55x = 615,014,268,675.78
  5. Step 5: Solve for x
    x = 615,014,268,675.78/652,238.55
  6. Step 6: Final answer
    x = 942,928.43

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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.