Finding the Fourth Proportional to 908,344,397.75, 1,253,515,818.18 and 490,656,867.57
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Solution
The fourth proportional to 908,344,397.75, 1,253,515,818.18 and 490,656,867.57 is: 677,106,773.96
Step by Step Solution
- Step 1: Write the proportion equation
908,344,397.75 : 1,253,515,818.18 = 490,656,867.57 : x - Step 2: Convert to fraction form
908,344,397.75/1,253,515,818.18 = 490,656,867.57/x - Step 3: Cross multiply
908,344,397.75x = 1,253,515,818.18 × 490,656,867.57 - Step 4: Simplify right side
908,344,397.75x = 615,046,144,797,644,544 - Step 5: Solve for x
x = 615,046,144,797,644,544/908,344,397.75 - Step 6: Final answer
x = 677,106,773.96
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1.5x scale
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.