Finding the Fourth Proportional to 1,891,319.63, 2,610,021.08 and 1,212,256.13
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Solution
The fourth proportional to 1,891,319.63, 2,610,021.08 and 1,212,256.13 is: 1,672,913.45
Step by Step Solution
- Step 1: Write the proportion equation
1,891,319.63 : 2,610,021.08 = 1,212,256.13 : x - Step 2: Convert to fraction form
1,891,319.63/2,610,021.08 = 1,212,256.13/x - Step 3: Cross multiply
1,891,319.63x = 2,610,021.08 × 1,212,256.13 - Step 4: Simplify right side
1,891,319.63x = 3,164,014,043,639.76 - Step 5: Solve for x
x = 3,164,014,043,639.76/1,891,319.63 - Step 6: Final answer
x = 1,672,913.45
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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.