Finding the Fourth Proportional to 809,168,815.74, 1,213,261,722.49 and 317,292,810.87
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Solution
The fourth proportional to 809,168,815.74, 1,213,261,722.49 and 317,292,810.87 is: 475,746,487.95
Step by Step Solution
- Step 1: Write the proportion equation
809,168,815.74 : 1,213,261,722.49 = 317,292,810.87 : x - Step 2: Convert to fraction form
809,168,815.74/1,213,261,722.49 = 317,292,810.87/x - Step 3: Cross multiply
809,168,815.74x = 1,213,261,722.49 × 317,292,810.87 - Step 4: Simplify right side
809,168,815.74x = 384,959,222,249,830,016 - Step 5: Solve for x
x = 384,959,222,249,830,016/809,168,815.74 - Step 6: Final answer
x = 475,746,487.95
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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.