Finding the Fourth Proportional to 1,135,132,967.20, 1,702,951,393.20 and 521,569,242.40
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Solution
The fourth proportional to 1,135,132,967.20, 1,702,951,393.20 and 521,569,242.40 is: 782,469,625.73
Step by Step Solution
- Step 1: Write the proportion equation
1,135,132,967.20 : 1,702,951,393.20 = 521,569,242.40 : x - Step 2: Convert to fraction form
1,135,132,967.20/1,702,951,393.20 = 521,569,242.40/x - Step 3: Cross multiply
1,135,132,967.20x = 1,702,951,393.20 × 521,569,242.40 - Step 4: Simplify right side
1,135,132,967.20x = 888,207,067,995,348,480 - Step 5: Solve for x
x = 888,207,067,995,348,480/1,135,132,967.20 - Step 6: Final answer
x = 782,469,625.73
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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.