Finding the Fourth Proportional to 7,149,128.19, 9,865,867.01 and 3,885,940.91
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Solution
The fourth proportional to 7,149,128.19, 9,865,867.01 and 3,885,940.91 is: 5,362,636.55
Step by Step Solution
- Step 1: Write the proportion equation
7,149,128.19 : 9,865,867.01 = 3,885,940.91 : x - Step 2: Convert to fraction form
7,149,128.19/9,865,867.01 = 3,885,940.91/x - Step 3: Cross multiply
7,149,128.19x = 9,865,867.01 × 3,885,940.91 - Step 4: Simplify right side
7,149,128.19x = 38,338,176,158,019.34 - Step 5: Solve for x
x = 38,338,176,158,019.34/7,149,128.19 - Step 6: Final answer
x = 5,362,636.55
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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.