Finding the Fourth Proportional to 1,916,680.80, 2,645,869.68 and 1,237,948.32
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Solution
The fourth proportional to 1,916,680.80, 2,645,869.68 and 1,237,948.32 is: 1,708,917.79
Step by Step Solution
- Step 1: Write the proportion equation
1,916,680.80 : 2,645,869.68 = 1,237,948.32 : x - Step 2: Convert to fraction form
1,916,680.80/2,645,869.68 = 1,237,948.32/x - Step 3: Cross multiply
1,916,680.80x = 2,645,869.68 × 1,237,948.32 - Step 4: Simplify right side
1,916,680.80x = 3,275,449,925,294.94 - Step 5: Solve for x
x = 3,275,449,925,294.94/1,916,680.80 - Step 6: Final answer
x = 1,708,917.79
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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.