Finding the Fourth Proportional to 7,139,878.14, 9,853,203.05 and 3,876,830.40
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Solution
The fourth proportional to 7,139,878.14, 9,853,203.05 and 3,876,830.40 is: 5,350,118.92
Step by Step Solution
- Step 1: Write the proportion equation
7,139,878.14 : 9,853,203.05 = 3,876,830.40 : x - Step 2: Convert to fraction form
7,139,878.14/9,853,203.05 = 3,876,830.40/x - Step 3: Cross multiply
7,139,878.14x = 9,853,203.05 × 3,876,830.40 - Step 4: Simplify right side
7,139,878.14x = 38,199,197,153,716.20 - Step 5: Solve for x
x = 38,199,197,153,716.20/7,139,878.14 - Step 6: Final answer
x = 5,350,118.92
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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.