Finding the Fourth Proportional to 5,356,137.74, 7,392,542.91 and 3,181,888.76
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Solution
The fourth proportional to 5,356,137.74, 7,392,542.91 and 3,181,888.76 is: 4,391,643.82
Step by Step Solution
- Step 1: Write the proportion equation
5,356,137.74 : 7,392,542.91 = 3,181,888.76 : x - Step 2: Convert to fraction form
5,356,137.74/7,392,542.91 = 3,181,888.76/x - Step 3: Cross multiply
5,356,137.74x = 7,392,542.91 × 3,181,888.76 - Step 4: Simplify right side
5,356,137.74x = 23,522,249,193,146.69 - Step 5: Solve for x
x = 23,522,249,193,146.69/5,356,137.74 - Step 6: Final answer
x = 4,391,643.82
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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.