Finding the Fourth Proportional to 5,249,392,812, 7,240,748,721.12 and 3,366,816,213.60
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Solution
The fourth proportional to 5,249,392,812, 7,240,748,721.12 and 3,366,816,213.60 is: 4,644,017,139.88
Step by Step Solution
- Step 1: Write the proportion equation
5,249,392,812 : 7,240,748,721.12 = 3,366,816,213.60 : x - Step 2: Convert to fraction form
5,249,392,812/7,240,748,721.12 = 3,366,816,213.60/x - Step 3: Cross multiply
5,249,392,812x = 7,240,748,721.12 × 3,366,816,213.60 - Step 4: Simplify right side
5,249,392,812x = 24,378,270,192,870,281,216 - Step 5: Solve for x
x = 24,378,270,192,870,281,216/5,249,392,812 - Step 6: Final answer
x = 4,644,017,139.88
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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.