Home / 1,313,192.40-1,968,622.20-780,147.60

Finding the Fourth Proportional to 1,313,192.40, 1,968,622.20 and 780,147.60

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Solution

The fourth proportional to 1,313,192.40, 1,968,622.20 and 780,147.60 is: 1,169,528.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,192.40 : 1,968,622.20 = 780,147.60 : x
  2. Step 2: Convert to fraction form
    1,313,192.40/1,968,622.20 = 780,147.60/x
  3. Step 3: Cross multiply
    1,313,192.40x = 1,968,622.20 × 780,147.60
  4. Step 4: Simplify right side
    1,313,192.40x = 1,535,815,884,636.72
  5. Step 5: Solve for x
    x = 1,535,815,884,636.72/1,313,192.40
  6. Step 6: Final answer
    x = 1,169,528.46

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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.