Home / 1,431,407.60-2,147,111.40-684,911.60

Finding the Fourth Proportional to 1,431,407.60, 2,147,111.40 and 684,911.60

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Solution

The fourth proportional to 1,431,407.60, 2,147,111.40 and 684,911.60 is: 1,027,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,407.60 : 2,147,111.40 = 684,911.60 : x
  2. Step 2: Convert to fraction form
    1,431,407.60/2,147,111.40 = 684,911.60/x
  3. Step 3: Cross multiply
    1,431,407.60x = 2,147,111.40 × 684,911.60
  4. Step 4: Simplify right side
    1,431,407.60x = 1,470,581,504,352.24
  5. Step 5: Solve for x
    x = 1,470,581,504,352.24/1,431,407.60
  6. Step 6: Final answer
    x = 1,027,367.40

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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.