Home / 808,829.20-1,213,243.80-509,647.60

Finding the Fourth Proportional to 808,829.20, 1,213,243.80 and 509,647.60

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Solution

The fourth proportional to 808,829.20, 1,213,243.80 and 509,647.60 is: 764,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,829.20 : 1,213,243.80 = 509,647.60 : x
  2. Step 2: Convert to fraction form
    808,829.20/1,213,243.80 = 509,647.60/x
  3. Step 3: Cross multiply
    808,829.20x = 1,213,243.80 × 509,647.60
  4. Step 4: Simplify right side
    808,829.20x = 618,326,790,884.88
  5. Step 5: Solve for x
    x = 618,326,790,884.88/808,829.20
  6. Step 6: Final answer
    x = 764,471.40

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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.