Finding the Fourth Proportional to 2,155,203,715.20, 3,232,805,572.80 and 1,638,643,063.20
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Solution
The fourth proportional to 2,155,203,715.20, 3,232,805,572.80 and 1,638,643,063.20 is: 2,457,964,594.80
Step by Step Solution
- Step 1: Write the proportion equation
2,155,203,715.20 : 3,232,805,572.80 = 1,638,643,063.20 : x - Step 2: Convert to fraction form
2,155,203,715.20/3,232,805,572.80 = 1,638,643,063.20/x - Step 3: Cross multiply
2,155,203,715.20x = 3,232,805,572.80 × 1,638,643,063.20 - Step 4: Simplify right side
2,155,203,715.20x = 5,297,414,426,543,023,104 - Step 5: Solve for x
x = 5,297,414,426,543,023,104/2,155,203,715.20 - Step 6: Final answer
x = 2,457,964,594.80
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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.