Home / 1,290,986.40-1,936,018.80-449,565.60

Finding the Fourth Proportional to 1,290,986.40, 1,936,018.80 and 449,565.60

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Solution

The fourth proportional to 1,290,986.40, 1,936,018.80 and 449,565.60 is: 674,187.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,986.40 : 1,936,018.80 = 449,565.60 : x
  2. Step 2: Convert to fraction form
    1,290,986.40/1,936,018.80 = 449,565.60/x
  3. Step 3: Cross multiply
    1,290,986.40x = 1,936,018.80 × 449,565.60
  4. Step 4: Simplify right side
    1,290,986.40x = 870,367,453,433.28
  5. Step 5: Solve for x
    x = 870,367,453,433.28/1,290,986.40
  6. Step 6: Final answer
    x = 674,187.93

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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.