Finding the Fourth Proportional to 921,235,510.80, 1,381,853,266.20 and 299,449,540.80
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Solution
The fourth proportional to 921,235,510.80, 1,381,853,266.20 and 299,449,540.80 is: 449,174,311.20
Step by Step Solution
- Step 1: Write the proportion equation
921,235,510.80 : 1,381,853,266.20 = 299,449,540.80 : x - Step 2: Convert to fraction form
921,235,510.80/1,381,853,266.20 = 299,449,540.80/x - Step 3: Cross multiply
921,235,510.80x = 1,381,853,266.20 × 299,449,540.80 - Step 4: Simplify right side
921,235,510.80x = 413,795,326,016,570,176 - Step 5: Solve for x
x = 413,795,326,016,570,176/921,235,510.80 - Step 6: Final answer
x = 449,174,311.20
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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.