Finding the Fourth Proportional to 7,780,171.23, 11,671,991.87 and 2,389,365.68
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Solution
The fourth proportional to 7,780,171.23, 11,671,991.87 and 2,389,365.68 is: 3,584,581.35
Step by Step Solution
- Step 1: Write the proportion equation
7,780,171.23 : 11,671,991.87 = 2,389,365.68 : x - Step 2: Convert to fraction form
7,780,171.23/11,671,991.87 = 2,389,365.68/x - Step 3: Cross multiply
7,780,171.23x = 11,671,991.87 × 2,389,365.68 - Step 4: Simplify right side
7,780,171.23x = 27,888,656,721,110.23 - Step 5: Solve for x
x = 27,888,656,721,110.23/7,780,171.23 - Step 6: Final answer
x = 3,584,581.35
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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.