Finding the Fourth Proportional to 1,390,627.84, 1,919,067.20 and 754,723.84
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Solution
The fourth proportional to 1,390,627.84, 1,919,067.20 and 754,723.84 is: 1,041,519.32
Step by Step Solution
- Step 1: Write the proportion equation
1,390,627.84 : 1,919,067.20 = 754,723.84 : x - Step 2: Convert to fraction form
1,390,627.84/1,919,067.20 = 754,723.84/x - Step 3: Cross multiply
1,390,627.84x = 1,919,067.20 × 754,723.84 - Step 4: Simplify right side
1,390,627.84x = 1,448,365,766,402.05 - Step 5: Solve for x
x = 1,448,365,766,402.05/1,390,627.84 - Step 6: Final answer
x = 1,041,519.32
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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.