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Finding the Fourth Proportional to 854,900.40, 1,282,350.60 and 818,497.20

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Solution

The fourth proportional to 854,900.40, 1,282,350.60 and 818,497.20 is: 1,227,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,900.40 : 1,282,350.60 = 818,497.20 : x
  2. Step 2: Convert to fraction form
    854,900.40/1,282,350.60 = 818,497.20/x
  3. Step 3: Cross multiply
    854,900.40x = 1,282,350.60 × 818,497.20
  4. Step 4: Simplify right side
    854,900.40x = 1,049,600,375,518.32
  5. Step 5: Solve for x
    x = 1,049,600,375,518.32/854,900.40
  6. Step 6: Final answer
    x = 1,227,745.80

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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.