Finding the Fourth Proportional to 485,571,791.80, 728,357,687.70 and 434,553,455.80
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Solution
The fourth proportional to 485,571,791.80, 728,357,687.70 and 434,553,455.80 is: 651,830,183.70
Step by Step Solution
- Step 1: Write the proportion equation
485,571,791.80 : 728,357,687.70 = 434,553,455.80 : x - Step 2: Convert to fraction form
485,571,791.80/728,357,687.70 = 434,553,455.80/x - Step 3: Cross multiply
485,571,791.80x = 728,357,687.70 × 434,553,455.80 - Step 4: Simplify right side
485,571,791.80x = 316,510,350,248,532,160 - Step 5: Solve for x
x = 316,510,350,248,532,160/485,571,791.80 - Step 6: Final answer
x = 651,830,183.70
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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.