Finding the Fourth Proportional to 960,339,246.78, 1,324,862,349.82 and 642,901,766.02
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Solution
The fourth proportional to 960,339,246.78, 1,324,862,349.82 and 642,901,766.02 is: 886,932,765.99
Step by Step Solution
- Step 1: Write the proportion equation
960,339,246.78 : 1,324,862,349.82 = 642,901,766.02 : x - Step 2: Convert to fraction form
960,339,246.78/1,324,862,349.82 = 642,901,766.02/x - Step 3: Cross multiply
960,339,246.78x = 1,324,862,349.82 × 642,901,766.02 - Step 4: Simplify right side
960,339,246.78x = 851,756,344,438,811,776 - Step 5: Solve for x
x = 851,756,344,438,811,776/960,339,246.78 - Step 6: Final answer
x = 886,932,765.99
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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.