Finding the Fourth Proportional to 614,481,415.20, 921,722,122.80 and 614,481,415.20
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Solution
The fourth proportional to 614,481,415.20, 921,722,122.80 and 614,481,415.20 is: 921,722,122.80
Step by Step Solution
- Step 1: Write the proportion equation
614,481,415.20 : 921,722,122.80 = 614,481,415.20 : x - Step 2: Convert to fraction form
614,481,415.20/921,722,122.80 = 614,481,415.20/x - Step 3: Cross multiply
614,481,415.20x = 921,722,122.80 × 614,481,415.20 - Step 4: Simplify right side
614,481,415.20x = 566,381,114,439,292,224 - Step 5: Solve for x
x = 566,381,114,439,292,224/614,481,415.20 - Step 6: Final answer
x = 921,722,122.80
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Double scale
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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.