Finding the Fourth Proportional to 809,168,821.97, 1,213,261,731.84 and 317,292,817.10
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Solution
The fourth proportional to 809,168,821.97, 1,213,261,731.84 and 317,292,817.10 is: 475,746,497.30
Step by Step Solution
- Step 1: Write the proportion equation
809,168,821.97 : 1,213,261,731.84 = 317,292,817.10 : x - Step 2: Convert to fraction form
809,168,821.97/1,213,261,731.84 = 317,292,817.10/x - Step 3: Cross multiply
809,168,821.97x = 1,213,261,731.84 × 317,292,817.10 - Step 4: Simplify right side
809,168,821.97x = 384,959,232,775,138,368 - Step 5: Solve for x
x = 384,959,232,775,138,368/809,168,821.97 - Step 6: Final answer
x = 475,746,497.30
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1.5x scale
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.