Home / 1,290,317.41-1,780,442.68-738,947.38

Finding the Fourth Proportional to 1,290,317.41, 1,780,442.68 and 738,947.38

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Solution

The fourth proportional to 1,290,317.41, 1,780,442.68 and 738,947.38 is: 1,019,635.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,317.41 : 1,780,442.68 = 738,947.38 : x
  2. Step 2: Convert to fraction form
    1,290,317.41/1,780,442.68 = 738,947.38/x
  3. Step 3: Cross multiply
    1,290,317.41x = 1,780,442.68 × 738,947.38
  4. Step 4: Simplify right side
    1,290,317.41x = 1,315,653,453,626.18
  5. Step 5: Solve for x
    x = 1,315,653,453,626.18/1,290,317.41
  6. Step 6: Final answer
    x = 1,019,635.51

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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.