Finding the Fourth Proportional to 1,555,879.98, 2,147,106.35 and 902,638.10
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Solution
The fourth proportional to 1,555,879.98, 2,147,106.35 and 902,638.10 is: 1,245,635.92
Step by Step Solution
- Step 1: Write the proportion equation
1,555,879.98 : 2,147,106.35 = 902,638.10 : x - Step 2: Convert to fraction form
1,555,879.98/2,147,106.35 = 902,638.10/x - Step 3: Cross multiply
1,555,879.98x = 2,147,106.35 × 902,638.10 - Step 4: Simplify right side
1,555,879.98x = 1,938,059,996,261.94 - Step 5: Solve for x
x = 1,938,059,996,261.94/1,555,879.98 - Step 6: Final answer
x = 1,245,635.92
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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.