Home / 1,321,750.80-1,984,181.40-1,312,419.60

Finding the Fourth Proportional to 1,321,750.80, 1,984,181.40 and 1,312,419.60

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Solution

The fourth proportional to 1,321,750.80, 1,984,181.40 and 1,312,419.60 is: 1,970,173.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,750.80 : 1,984,181.40 = 1,312,419.60 : x
  2. Step 2: Convert to fraction form
    1,321,750.80/1,984,181.40 = 1,312,419.60/x
  3. Step 3: Cross multiply
    1,321,750.80x = 1,984,181.40 × 1,312,419.60
  4. Step 4: Simplify right side
    1,321,750.80x = 2,604,078,559,315.44
  5. Step 5: Solve for x
    x = 2,604,078,559,315.44/1,321,750.80
  6. Step 6: Final answer
    x = 1,970,173.62

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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.