Finding the Fourth Proportional to 7,169,539.86, 9,893,840.42 and 3,906,381.40
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Solution
The fourth proportional to 7,169,539.86, 9,893,840.42 and 3,906,381.40 is: 5,390,738.45
Step by Step Solution
- Step 1: Write the proportion equation
7,169,539.86 : 9,893,840.42 = 3,906,381.40 : x - Step 2: Convert to fraction form
7,169,539.86/9,893,840.42 = 3,906,381.40/x - Step 3: Cross multiply
7,169,539.86x = 9,893,840.42 × 3,906,381.40 - Step 4: Simplify right side
7,169,539.86x = 38,649,114,191,256.19 - Step 5: Solve for x
x = 38,649,114,191,256.19/7,169,539.86 - Step 6: Final answer
x = 5,390,738.45
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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.