Finding the Fourth Proportional to 921,268,233.90, 1,381,902,350.85 and 572,589,793.80
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Solution
The fourth proportional to 921,268,233.90, 1,381,902,350.85 and 572,589,793.80 is: 858,884,690.70
Step by Step Solution
- Step 1: Write the proportion equation
921,268,233.90 : 1,381,902,350.85 = 572,589,793.80 : x - Step 2: Convert to fraction form
921,268,233.90/1,381,902,350.85 = 572,589,793.80/x - Step 3: Cross multiply
921,268,233.90x = 1,381,902,350.85 × 572,589,793.80 - Step 4: Simplify right side
921,268,233.90x = 791,263,182,124,936,576 - Step 5: Solve for x
x = 791,263,182,124,936,576/921,268,233.90 - Step 6: Final answer
x = 858,884,690.70
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Double scale
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Similar ratio
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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.