Finding the Fourth Proportional to 1,428,177.90, 1,970,885.34 and 816,343.74
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Solution
The fourth proportional to 1,428,177.90, 1,970,885.34 and 816,343.74 is: 1,126,554.27
Step by Step Solution
- Step 1: Write the proportion equation
1,428,177.90 : 1,970,885.34 = 816,343.74 : x - Step 2: Convert to fraction form
1,428,177.90/1,970,885.34 = 816,343.74/x - Step 3: Cross multiply
1,428,177.90x = 1,970,885.34 × 816,343.74 - Step 4: Simplify right side
1,428,177.90x = 1,608,919,909,566.77 - Step 5: Solve for x
x = 1,608,919,909,566.77/1,428,177.90 - Step 6: Final answer
x = 1,126,554.27
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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.