Home / 819,914.64-1,228,472.28-445,266.96

Finding the Fourth Proportional to 819,914.64, 1,228,472.28 and 445,266.96

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Solution

The fourth proportional to 819,914.64, 1,228,472.28 and 445,266.96 is: 667,140.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,914.64 : 1,228,472.28 = 445,266.96 : x
  2. Step 2: Convert to fraction form
    819,914.64/1,228,472.28 = 445,266.96/x
  3. Step 3: Cross multiply
    819,914.64x = 1,228,472.28 × 445,266.96
  4. Step 4: Simplify right side
    819,914.64x = 546,998,117,559.87
  5. Step 5: Solve for x
    x = 546,998,117,559.87/819,914.64
  6. Step 6: Final answer
    x = 667,140.32

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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.