Finding the Fourth Proportional to 1,409,043.40, 2,112,009.90 and 778,409.80
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Solution
The fourth proportional to 1,409,043.40, 2,112,009.90 and 778,409.80 is: 1,166,755.55
Step by Step Solution
- Step 1: Write the proportion equation
1,409,043.40 : 2,112,009.90 = 778,409.80 : x - Step 2: Convert to fraction form
1,409,043.40/2,112,009.90 = 778,409.80/x - Step 3: Cross multiply
1,409,043.40x = 2,112,009.90 × 778,409.80 - Step 4: Simplify right side
1,409,043.40x = 1,644,009,203,857.02 - Step 5: Solve for x
x = 1,644,009,203,857.02/1,409,043.40 - Step 6: Final answer
x = 1,166,755.55
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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.