Finding the Fourth Proportional to 1,585,207,620.80, 2,376,961,125.60 and 664,043,220.80
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Solution
The fourth proportional to 1,585,207,620.80, 2,376,961,125.60 and 664,043,220.80 is: 995,708,638.32
Step by Step Solution
- Step 1: Write the proportion equation
1,585,207,620.80 : 2,376,961,125.60 = 664,043,220.80 : x - Step 2: Convert to fraction form
1,585,207,620.80/2,376,961,125.60 = 664,043,220.80/x - Step 3: Cross multiply
1,585,207,620.80x = 2,376,961,125.60 × 664,043,220.80 - Step 4: Simplify right side
1,585,207,620.80x = 1,578,404,921,559,817,216 - Step 5: Solve for x
x = 1,578,404,921,559,817,216/1,585,207,620.80 - Step 6: Final answer
x = 995,708,638.32
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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.