Finding the Fourth Proportional to 5,190,348.12, 7,158,699.60 and 3,123,208.74
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Solution
The fourth proportional to 5,190,348.12, 7,158,699.60 and 3,123,208.74 is: 4,307,632.68
Step by Step Solution
- Step 1: Write the proportion equation
5,190,348.12 : 7,158,699.60 = 3,123,208.74 : x - Step 2: Convert to fraction form
5,190,348.12/7,158,699.60 = 3,123,208.74/x - Step 3: Cross multiply
5,190,348.12x = 7,158,699.60 × 3,123,208.74 - Step 4: Simplify right side
5,190,348.12x = 22,358,113,157,754.50 - Step 5: Solve for x
x = 22,358,113,157,754.50/5,190,348.12 - Step 6: Final answer
x = 4,307,632.68
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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.