Finding the Fourth Proportional to 3,768,705.81, 5,201,353.30 and 2,115,029.45
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Solution
The fourth proportional to 3,768,705.81, 5,201,353.30 and 2,115,029.45 is: 2,919,043.29
Step by Step Solution
- Step 1: Write the proportion equation
3,768,705.81 : 5,201,353.30 = 2,115,029.45 : x - Step 2: Convert to fraction form
3,768,705.81/5,201,353.30 = 2,115,029.45/x - Step 3: Cross multiply
3,768,705.81x = 5,201,353.30 × 2,115,029.45 - Step 4: Simplify right side
3,768,705.81x = 11,001,015,409,354.69 - Step 5: Solve for x
x = 11,001,015,409,354.69/3,768,705.81 - Step 6: Final answer
x = 2,919,043.29
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1.5x scale
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.