Finding the Fourth Proportional to 1,207,813.30, 1,666,787.74 and 663,984.12
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Solution
The fourth proportional to 1,207,813.30, 1,666,787.74 and 663,984.12 is: 916,301.05
Step by Step Solution
- Step 1: Write the proportion equation
1,207,813.30 : 1,666,787.74 = 663,984.12 : x - Step 2: Convert to fraction form
1,207,813.30/1,666,787.74 = 663,984.12/x - Step 3: Cross multiply
1,207,813.30x = 1,666,787.74 × 663,984.12 - Step 4: Simplify right side
1,207,813.30x = 1,106,720,590,770.69 - Step 5: Solve for x
x = 1,106,720,590,770.69/1,207,813.30 - Step 6: Final answer
x = 916,301.05
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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.