Finding the Fourth Proportional to 889,236,147.13, 1,227,153,193.95 and 492,765,757.65
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Solution
The fourth proportional to 889,236,147.13, 1,227,153,193.95 and 492,765,757.65 is: 680,020,796.86
Step by Step Solution
- Step 1: Write the proportion equation
889,236,147.13 : 1,227,153,193.95 = 492,765,757.65 : x - Step 2: Convert to fraction form
889,236,147.13/1,227,153,193.95 = 492,765,757.65/x - Step 3: Cross multiply
889,236,147.13x = 1,227,153,193.95 × 492,765,757.65 - Step 4: Simplify right side
889,236,147.13x = 604,699,073,369,389,184 - Step 5: Solve for x
x = 604,699,073,369,389,184/889,236,147.13 - Step 6: Final answer
x = 680,020,796.86
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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.