Home / 1,121,465.10-1,680,192.90-682,485.60

Finding the Fourth Proportional to 1,121,465.10, 1,680,192.90 and 682,485.60

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Solution

The fourth proportional to 1,121,465.10, 1,680,192.90 and 682,485.60 is: 1,022,508.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,465.10 : 1,680,192.90 = 682,485.60 : x
  2. Step 2: Convert to fraction form
    1,121,465.10/1,680,192.90 = 682,485.60/x
  3. Step 3: Cross multiply
    1,121,465.10x = 1,680,192.90 × 682,485.60
  4. Step 4: Simplify right side
    1,121,465.10x = 1,146,707,459,472.24
  5. Step 5: Solve for x
    x = 1,146,707,459,472.24/1,121,465.10
  6. Step 6: Final answer
    x = 1,022,508.38

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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.