Finding the Fourth Proportional to 3,918,871.42, 5,407,743.93 and 2,199,659.74
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Solution
The fourth proportional to 3,918,871.42, 5,407,743.93 and 2,199,659.74 is: 3,035,362.82
Step by Step Solution
- Step 1: Write the proportion equation
3,918,871.42 : 5,407,743.93 = 2,199,659.74 : x - Step 2: Convert to fraction form
3,918,871.42/5,407,743.93 = 2,199,659.74/x - Step 3: Cross multiply
3,918,871.42x = 5,407,743.93 × 2,199,659.74 - Step 4: Simplify right side
3,918,871.42x = 11,895,196,607,050.38 - Step 5: Solve for x
x = 11,895,196,607,050.38/3,918,871.42 - Step 6: Final answer
x = 3,035,362.82
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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.