Finding the Fourth Proportional to 5,218,468.20, 7,201,538.28 and 2,926,579.68
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Solution
The fourth proportional to 5,218,468.20, 7,201,538.28 and 2,926,579.68 is: 4,038,709.21
Step by Step Solution
- Step 1: Write the proportion equation
5,218,468.20 : 7,201,538.28 = 2,926,579.68 : x - Step 2: Convert to fraction form
5,218,468.20/7,201,538.28 = 2,926,579.68/x - Step 3: Cross multiply
5,218,468.20x = 7,201,538.28 × 2,926,579.68 - Step 4: Simplify right side
5,218,468.20x = 21,075,875,594,990.15 - Step 5: Solve for x
x = 21,075,875,594,990.15/5,218,468.20 - Step 6: Final answer
x = 4,038,709.21
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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.