Finding the Fourth Proportional to 2,129,062.78, 2,938,004.22 and 1,211,205.70
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Solution
The fourth proportional to 2,129,062.78, 2,938,004.22 and 1,211,205.70 is: 1,671,405.60
Step by Step Solution
- Step 1: Write the proportion equation
2,129,062.78 : 2,938,004.22 = 1,211,205.70 : x - Step 2: Convert to fraction form
2,129,062.78/2,938,004.22 = 1,211,205.70/x - Step 3: Cross multiply
2,129,062.78x = 2,938,004.22 × 1,211,205.70 - Step 4: Simplify right side
2,129,062.78x = 3,558,527,457,888.05 - Step 5: Solve for x
x = 3,558,527,457,888.05/2,129,062.78 - Step 6: Final answer
x = 1,671,405.60
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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.