Finding the Fourth Proportional to 3,938,391.92, 5,907,588.93 and 1,242,928.09
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Solution
The fourth proportional to 3,938,391.92, 5,907,588.93 and 1,242,928.09 is: 1,864,392.47
Step by Step Solution
- Step 1: Write the proportion equation
3,938,391.92 : 5,907,588.93 = 1,242,928.09 : x - Step 2: Convert to fraction form
3,938,391.92/5,907,588.93 = 1,242,928.09/x - Step 3: Cross multiply
3,938,391.92x = 5,907,588.93 × 1,242,928.09 - Step 4: Simplify right side
3,938,391.92x = 7,342,708,232,654.53 - Step 5: Solve for x
x = 7,342,708,232,654.53/3,938,391.92 - Step 6: Final answer
x = 1,864,392.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.