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Finding the Fourth Proportional to 628,989.80, 942,611.82 and 286,596.46

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Solution

The fourth proportional to 628,989.80, 942,611.82 and 286,596.46 is: 429,496.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,989.80 : 942,611.82 = 286,596.46 : x
  2. Step 2: Convert to fraction form
    628,989.80/942,611.82 = 286,596.46/x
  3. Step 3: Cross multiply
    628,989.80x = 942,611.82 × 286,596.46
  4. Step 4: Simplify right side
    628,989.80x = 270,149,210,766.16
  5. Step 5: Solve for x
    x = 270,149,210,766.16/628,989.80
  6. Step 6: Final answer
    x = 429,496.97

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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.