Finding the Fourth Proportional to 1,128,113.18, 1,556,544.35 and 668,994.44
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Solution
The fourth proportional to 1,128,113.18, 1,556,544.35 and 668,994.44 is: 923,062.98
Step by Step Solution
- Step 1: Write the proportion equation
1,128,113.18 : 1,556,544.35 = 668,994.44 : x - Step 2: Convert to fraction form
1,128,113.18/1,556,544.35 = 668,994.44/x - Step 3: Cross multiply
1,128,113.18x = 1,556,544.35 × 668,994.44 - Step 4: Simplify right side
1,128,113.18x = 1,041,319,512,418.44 - Step 5: Solve for x
x = 1,041,319,512,418.44/1,128,113.18 - Step 6: Final answer
x = 923,062.98
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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.