Finding the Fourth Proportional to 7,387,863.70, 11,081,795.55 and 7,221,975.70
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Solution
The fourth proportional to 7,387,863.70, 11,081,795.55 and 7,221,975.70 is: 10,832,963.55
Step by Step Solution
- Step 1: Write the proportion equation
7,387,863.70 : 11,081,795.55 = 7,221,975.70 : x - Step 2: Convert to fraction form
7,387,863.70/11,081,795.55 = 7,221,975.70/x - Step 3: Cross multiply
7,387,863.70x = 11,081,795.55 × 7,221,975.70 - Step 4: Simplify right side
7,387,863.70x = 80,032,458,174,468.14 - Step 5: Solve for x
x = 80,032,458,174,468.14/7,387,863.70 - Step 6: Final answer
x = 10,832,963.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.