Finding the Fourth Proportional to 7,801,887.60, 11,702,831.40 and 4,778,578.80
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Solution
The fourth proportional to 7,801,887.60, 11,702,831.40 and 4,778,578.80 is: 7,167,868.20
Step by Step Solution
- Step 1: Write the proportion equation
7,801,887.60 : 11,702,831.40 = 4,778,578.80 : x - Step 2: Convert to fraction form
7,801,887.60/11,702,831.40 = 4,778,578.80/x - Step 3: Cross multiply
7,801,887.60x = 11,702,831.40 × 4,778,578.80 - Step 4: Simplify right side
7,801,887.60x = 55,922,902,028,014.32 - Step 5: Solve for x
x = 55,922,902,028,014.32/7,801,887.60 - Step 6: Final answer
x = 7,167,868.20
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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.