Home / 1,290,226.96-1,780,443.48-717,226.48

Finding the Fourth Proportional to 1,290,226.96, 1,780,443.48 and 717,226.48

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Solution

The fourth proportional to 1,290,226.96, 1,780,443.48 and 717,226.48 is: 989,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,226.96 : 1,780,443.48 = 717,226.48 : x
  2. Step 2: Convert to fraction form
    1,290,226.96/1,780,443.48 = 717,226.48/x
  3. Step 3: Cross multiply
    1,290,226.96x = 1,780,443.48 × 717,226.48
  4. Step 4: Simplify right side
    1,290,226.96x = 1,276,981,209,999.35
  5. Step 5: Solve for x
    x = 1,276,981,209,999.35/1,290,226.96
  6. Step 6: Final answer
    x = 989,733.78

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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.