Home / 1,242,275.70-1,862,429.40-681,310.20

Finding the Fourth Proportional to 1,242,275.70, 1,862,429.40 and 681,310.20

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Solution

The fourth proportional to 1,242,275.70, 1,862,429.40 and 681,310.20 is: 1,021,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,275.70 : 1,862,429.40 = 681,310.20 : x
  2. Step 2: Convert to fraction form
    1,242,275.70/1,862,429.40 = 681,310.20/x
  3. Step 3: Cross multiply
    1,242,275.70x = 1,862,429.40 × 681,310.20
  4. Step 4: Simplify right side
    1,242,275.70x = 1,268,892,146,999.88
  5. Step 5: Solve for x
    x = 1,268,892,146,999.88/1,242,275.70
  6. Step 6: Final answer
    x = 1,021,425.56

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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.