Home / 1,173,162.78-1,618,964.60-636,618.78

Finding the Fourth Proportional to 1,173,162.78, 1,618,964.60 and 636,618.78

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Solution

The fourth proportional to 1,173,162.78, 1,618,964.60 and 636,618.78 is: 878,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,162.78 : 1,618,964.60 = 636,618.78 : x
  2. Step 2: Convert to fraction form
    1,173,162.78/1,618,964.60 = 636,618.78/x
  3. Step 3: Cross multiply
    1,173,162.78x = 1,618,964.60 × 636,618.78
  4. Step 4: Simplify right side
    1,173,162.78x = 1,030,663,268,515.19
  5. Step 5: Solve for x
    x = 1,030,663,268,515.19/1,173,162.78
  6. Step 6: Final answer
    x = 878,533.90

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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.