Finding the Fourth Proportional to 920,392,463.98, 1,270,104,904.29 and 518,496,850.74
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Solution
The fourth proportional to 920,392,463.98, 1,270,104,904.29 and 518,496,850.74 is: 715,504,981.58
Step by Step Solution
- Step 1: Write the proportion equation
920,392,463.98 : 1,270,104,904.29 = 518,496,850.74 : x - Step 2: Convert to fraction form
920,392,463.98/1,270,104,904.29 = 518,496,850.74/x - Step 3: Cross multiply
920,392,463.98x = 1,270,104,904.29 × 518,496,850.74 - Step 4: Simplify right side
920,392,463.98x = 658,545,392,978,892,160 - Step 5: Solve for x
x = 658,545,392,978,892,160/920,392,463.98 - Step 6: Final answer
x = 715,504,981.58
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Double scale
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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.