Finding the Fourth Proportional to 861,941,434.65, 1,292,912,169.14 and 206,892,460.99
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Solution
The fourth proportional to 861,941,434.65, 1,292,912,169.14 and 206,892,460.99 is: 310,338,695.61
Step by Step Solution
- Step 1: Write the proportion equation
861,941,434.65 : 1,292,912,169.14 = 206,892,460.99 : x - Step 2: Convert to fraction form
861,941,434.65/1,292,912,169.14 = 206,892,460.99/x - Step 3: Cross multiply
861,941,434.65x = 1,292,912,169.14 × 206,892,460.99 - Step 4: Simplify right side
861,941,434.65x = 267,493,780,517,293,760 - Step 5: Solve for x
x = 267,493,780,517,293,760/861,941,434.65 - Step 6: Final answer
x = 310,338,695.61
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1.5x scale
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.