Finding the Fourth Proportional to 1,232,375,128.24, 1,700,679,130.80 and 667,860,006.96
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Solution
The fourth proportional to 1,232,375,128.24, 1,700,679,130.80 and 667,860,006.96 is: 921,647,597.48
Step by Step Solution
- Step 1: Write the proportion equation
1,232,375,128.24 : 1,700,679,130.80 = 667,860,006.96 : x - Step 2: Convert to fraction form
1,232,375,128.24/1,700,679,130.80 = 667,860,006.96/x - Step 3: Cross multiply
1,232,375,128.24x = 1,700,679,130.80 × 667,860,006.96 - Step 4: Simplify right side
1,232,375,128.24x = 1,135,815,576,132,814,720 - Step 5: Solve for x
x = 1,135,815,576,132,814,720/1,232,375,128.24 - Step 6: Final answer
x = 921,647,597.48
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1.5x scale
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.