Finding the Fourth Proportional to 1,728,887,651.28, 2,385,865,729.06 and 935,933,604.75
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Solution
The fourth proportional to 1,728,887,651.28, 2,385,865,729.06 and 935,933,604.75 is: 1,291,588,791.55
Step by Step Solution
- Step 1: Write the proportion equation
1,728,887,651.28 : 2,385,865,729.06 = 935,933,604.75 : x - Step 2: Convert to fraction form
1,728,887,651.28/2,385,865,729.06 = 935,933,604.75/x - Step 3: Cross multiply
1,728,887,651.28x = 2,385,865,729.06 × 935,933,604.75 - Step 4: Simplify right side
1,728,887,651.28x = 2,233,011,912,246,272,768 - Step 5: Solve for x
x = 2,233,011,912,246,272,768/1,728,887,651.28 - Step 6: Final answer
x = 1,291,588,791.55
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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.