Home / 1,178,427.16-1,626,183.72-720,308.78

Finding the Fourth Proportional to 1,178,427.16, 1,626,183.72 and 720,308.78

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Solution

The fourth proportional to 1,178,427.16, 1,626,183.72 and 720,308.78 is: 993,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,427.16 : 1,626,183.72 = 720,308.78 : x
  2. Step 2: Convert to fraction form
    1,178,427.16/1,626,183.72 = 720,308.78/x
  3. Step 3: Cross multiply
    1,178,427.16x = 1,626,183.72 × 720,308.78
  4. Step 4: Simplify right side
    1,178,427.16x = 1,171,354,409,376.33
  5. Step 5: Solve for x
    x = 1,171,354,409,376.33/1,178,427.16
  6. Step 6: Final answer
    x = 993,998.14

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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.