Home / 1,298,007.75-1,790,087.13-1,080,935.25

Finding the Fourth Proportional to 1,298,007.75, 1,790,087.13 and 1,080,935.25

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Solution

The fourth proportional to 1,298,007.75, 1,790,087.13 and 1,080,935.25 is: 1,490,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,007.75 : 1,790,087.13 = 1,080,935.25 : x
  2. Step 2: Convert to fraction form
    1,298,007.75/1,790,087.13 = 1,080,935.25/x
  3. Step 3: Cross multiply
    1,298,007.75x = 1,790,087.13 × 1,080,935.25
  4. Step 4: Simplify right side
    1,298,007.75x = 1,934,968,279,388.33
  5. Step 5: Solve for x
    x = 1,934,968,279,388.33/1,298,007.75
  6. Step 6: Final answer
    x = 1,490,721.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.