Finding the Fourth Proportional to 1,389,948.84, 1,918,023.42 and 777,961.44
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Solution
The fourth proportional to 1,389,948.84, 1,918,023.42 and 777,961.44 is: 1,073,527.47
Step by Step Solution
- Step 1: Write the proportion equation
1,389,948.84 : 1,918,023.42 = 777,961.44 : x - Step 2: Convert to fraction form
1,389,948.84/1,918,023.42 = 777,961.44/x - Step 3: Cross multiply
1,389,948.84x = 1,918,023.42 × 777,961.44 - Step 4: Simplify right side
1,389,948.84x = 1,492,148,261,776.92 - Step 5: Solve for x
x = 1,492,148,261,776.92/1,389,948.84 - Step 6: Final answer
x = 1,073,527.47
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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.