Finding the Fourth Proportional to 7,157,555.65, 9,877,130.99 and 3,894,383.07
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Solution
The fourth proportional to 7,157,555.65, 9,877,130.99 and 3,894,383.07 is: 5,374,087.69
Step by Step Solution
- Step 1: Write the proportion equation
7,157,555.65 : 9,877,130.99 = 3,894,383.07 : x - Step 2: Convert to fraction form
7,157,555.65/9,877,130.99 = 3,894,383.07/x - Step 3: Cross multiply
7,157,555.65x = 9,877,130.99 × 3,894,383.07 - Step 4: Simplify right side
7,157,555.65x = 38,465,331,702,760.36 - Step 5: Solve for x
x = 38,465,331,702,760.36/7,157,555.65 - Step 6: Final answer
x = 5,374,087.69
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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.