Finding the Fourth Proportional to 3,918,997.41, 5,408,032.35 and 2,176,779.75
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Solution
The fourth proportional to 3,918,997.41, 5,408,032.35 and 2,176,779.75 is: 3,003,853.81
Step by Step Solution
- Step 1: Write the proportion equation
3,918,997.41 : 5,408,032.35 = 2,176,779.75 : x - Step 2: Convert to fraction form
3,918,997.41/5,408,032.35 = 2,176,779.75/x - Step 3: Cross multiply
3,918,997.41x = 5,408,032.35 × 2,176,779.75 - Step 4: Simplify right side
3,918,997.41x = 11,772,095,306,824.91 - Step 5: Solve for x
x = 11,772,095,306,824.91/3,918,997.41 - Step 6: Final answer
x = 3,003,853.81
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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.