Home / 1,242,205.20-1,862,141.40-972,183.60

Finding the Fourth Proportional to 1,242,205.20, 1,862,141.40 and 972,183.60

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Solution

The fourth proportional to 1,242,205.20, 1,862,141.40 and 972,183.60 is: 1,457,362.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,205.20 : 1,862,141.40 = 972,183.60 : x
  2. Step 2: Convert to fraction form
    1,242,205.20/1,862,141.40 = 972,183.60/x
  3. Step 3: Cross multiply
    1,242,205.20x = 1,862,141.40 × 972,183.60
  4. Step 4: Simplify right side
    1,242,205.20x = 1,810,343,329,961.04
  5. Step 5: Solve for x
    x = 1,810,343,329,961.04/1,242,205.20
  6. Step 6: Final answer
    x = 1,457,362.54

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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.