Finding the Fourth Proportional to 5,642,448.91, 7,788,963.14 and 3,809,390.11
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Solution
The fourth proportional to 5,642,448.91, 7,788,963.14 and 3,809,390.11 is: 5,258,567.62
Step by Step Solution
- Step 1: Write the proportion equation
5,642,448.91 : 7,788,963.14 = 3,809,390.11 : x - Step 2: Convert to fraction form
5,642,448.91/7,788,963.14 = 3,809,390.11/x - Step 3: Cross multiply
5,642,448.91x = 7,788,963.14 × 3,809,390.11 - Step 4: Simplify right side
5,642,448.91x = 29,671,199,128,436.40 - Step 5: Solve for x
x = 29,671,199,128,436.40/5,642,448.91 - Step 6: Final answer
x = 5,258,567.62
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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.