Finding the Fourth Proportional to 5,167,228.96, 7,130,312.49 and 2,991,918.94
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Solution
The fourth proportional to 5,167,228.96, 7,130,312.49 and 2,991,918.94 is: 4,128,579.78
Step by Step Solution
- Step 1: Write the proportion equation
5,167,228.96 : 7,130,312.49 = 2,991,918.94 : x - Step 2: Convert to fraction form
5,167,228.96/7,130,312.49 = 2,991,918.94/x - Step 3: Cross multiply
5,167,228.96x = 7,130,312.49 × 2,991,918.94 - Step 4: Simplify right side
5,167,228.96x = 21,333,316,986,949.56 - Step 5: Solve for x
x = 21,333,316,986,949.56/5,167,228.96 - Step 6: Final answer
x = 4,128,579.78
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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.