Finding the Fourth Proportional to 5,114,478.20, 7,055,765.91 and 3,127,701.02
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Solution
The fourth proportional to 5,114,478.20, 7,055,765.91 and 3,127,701.02 is: 4,314,873.45
Step by Step Solution
- Step 1: Write the proportion equation
5,114,478.20 : 7,055,765.91 = 3,127,701.02 : x - Step 2: Convert to fraction form
5,114,478.20/7,055,765.91 = 3,127,701.02/x - Step 3: Cross multiply
5,114,478.20x = 7,055,765.91 × 3,127,701.02 - Step 4: Simplify right side
5,114,478.20x = 22,068,326,198,309.40 - Step 5: Solve for x
x = 22,068,326,198,309.40/5,114,478.20 - Step 6: Final answer
x = 4,314,873.45
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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.