Home / 1,079,518.40-1,618,240.80-839,499.20

Finding the Fourth Proportional to 1,079,518.40, 1,618,240.80 and 839,499.20

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Solution

The fourth proportional to 1,079,518.40, 1,618,240.80 and 839,499.20 is: 1,258,442.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,518.40 : 1,618,240.80 = 839,499.20 : x
  2. Step 2: Convert to fraction form
    1,079,518.40/1,618,240.80 = 839,499.20/x
  3. Step 3: Cross multiply
    1,079,518.40x = 1,618,240.80 × 839,499.20
  4. Step 4: Simplify right side
    1,079,518.40x = 1,358,511,857,007.36
  5. Step 5: Solve for x
    x = 1,358,511,857,007.36/1,079,518.40
  6. Step 6: Final answer
    x = 1,258,442.52

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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.