Home / 2,742,128.60-4,114,359.30-1,321,453.40

Finding the Fourth Proportional to 2,742,128.60, 4,114,359.30 and 1,321,453.40

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Solution

The fourth proportional to 2,742,128.60, 4,114,359.30 and 1,321,453.40 is: 1,982,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742,128.60 : 4,114,359.30 = 1,321,453.40 : x
  2. Step 2: Convert to fraction form
    2,742,128.60/4,114,359.30 = 1,321,453.40/x
  3. Step 3: Cross multiply
    2,742,128.60x = 4,114,359.30 × 1,321,453.40
  4. Step 4: Simplify right side
    2,742,128.60x = 5,436,934,085,806.62
  5. Step 5: Solve for x
    x = 5,436,934,085,806.62/2,742,128.60
  6. Step 6: Final answer
    x = 1,982,742.20

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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.