Home / 2,100,459.20-3,150,688.80-1,938,257.60

Finding the Fourth Proportional to 2,100,459.20, 3,150,688.80 and 1,938,257.60

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Solution

The fourth proportional to 2,100,459.20, 3,150,688.80 and 1,938,257.60 is: 2,907,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,459.20 : 3,150,688.80 = 1,938,257.60 : x
  2. Step 2: Convert to fraction form
    2,100,459.20/3,150,688.80 = 1,938,257.60/x
  3. Step 3: Cross multiply
    2,100,459.20x = 3,150,688.80 × 1,938,257.60
  4. Step 4: Simplify right side
    2,100,459.20x = 6,106,846,511,834.88
  5. Step 5: Solve for x
    x = 6,106,846,511,834.88/2,100,459.20
  6. Step 6: Final answer
    x = 2,907,386.40

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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.