Home / 819,782.40-1,229,673.60-766,905.60

Finding the Fourth Proportional to 819,782.40, 1,229,673.60 and 766,905.60

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Solution

The fourth proportional to 819,782.40, 1,229,673.60 and 766,905.60 is: 1,150,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,782.40 : 1,229,673.60 = 766,905.60 : x
  2. Step 2: Convert to fraction form
    819,782.40/1,229,673.60 = 766,905.60/x
  3. Step 3: Cross multiply
    819,782.40x = 1,229,673.60 × 766,905.60
  4. Step 4: Simplify right side
    819,782.40x = 943,043,570,012.16
  5. Step 5: Solve for x
    x = 943,043,570,012.16/819,782.40
  6. Step 6: Final answer
    x = 1,150,358.40

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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.