Finding the Fourth Proportional to 2,157,837.78, 2,977,809.98 and 1,190,961.14
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Solution
The fourth proportional to 2,157,837.78, 2,977,809.98 and 1,190,961.14 is: 1,643,522.98
Step by Step Solution
- Step 1: Write the proportion equation
2,157,837.78 : 2,977,809.98 = 1,190,961.14 : x - Step 2: Convert to fraction form
2,157,837.78/2,977,809.98 = 1,190,961.14/x - Step 3: Cross multiply
2,157,837.78x = 2,977,809.98 × 1,190,961.14 - Step 4: Simplify right side
2,157,837.78x = 3,546,455,968,484.18 - Step 5: Solve for x
x = 3,546,455,968,484.18/2,157,837.78 - Step 6: Final answer
x = 1,643,522.98
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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.