Finding the Fourth Proportional to 7,139,878.65, 9,853,203.74 and 3,876,830.91
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Solution
The fourth proportional to 7,139,878.65, 9,853,203.74 and 3,876,830.91 is: 5,350,119.61
Step by Step Solution
- Step 1: Write the proportion equation
7,139,878.65 : 9,853,203.74 = 3,876,830.91 : x - Step 2: Convert to fraction form
7,139,878.65/9,853,203.74 = 3,876,830.91/x - Step 3: Cross multiply
7,139,878.65x = 9,853,203.74 × 3,876,830.91 - Step 4: Simplify right side
7,139,878.65x = 38,199,204,772,493.59 - Step 5: Solve for x
x = 38,199,204,772,493.59/7,139,878.65 - Step 6: Final answer
x = 5,350,119.61
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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.