Finding the Fourth Proportional to 1,918,805.76, 2,647,955.88 and 1,059,367.68
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Solution
The fourth proportional to 1,918,805.76, 2,647,955.88 and 1,059,367.68 is: 1,461,929.57
Step by Step Solution
- Step 1: Write the proportion equation
1,918,805.76 : 2,647,955.88 = 1,059,367.68 : x - Step 2: Convert to fraction form
1,918,805.76/2,647,955.88 = 1,059,367.68/x - Step 3: Cross multiply
1,918,805.76x = 2,647,955.88 × 1,059,367.68 - Step 4: Simplify right side
1,918,805.76x = 2,805,158,877,337.96 - Step 5: Solve for x
x = 2,805,158,877,337.96/1,918,805.76 - Step 6: Final answer
x = 1,461,929.57
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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.