Finding the Fourth Proportional to 3,998,691.69, 5,518,177.80 and 2,163,145.35
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Solution
The fourth proportional to 3,998,691.69, 5,518,177.80 and 2,163,145.35 is: 2,985,131.53
Step by Step Solution
- Step 1: Write the proportion equation
3,998,691.69 : 5,518,177.80 = 2,163,145.35 : x - Step 2: Convert to fraction form
3,998,691.69/5,518,177.80 = 2,163,145.35/x - Step 3: Cross multiply
3,998,691.69x = 5,518,177.80 × 2,163,145.35 - Step 4: Simplify right side
3,998,691.69x = 11,936,620,648,543.23 - Step 5: Solve for x
x = 11,936,620,648,543.23/3,998,691.69 - Step 6: Final answer
x = 2,985,131.53
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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.