Finding the Fourth Proportional to 1,392,079,775.76, 1,921,120,598.16 and 797,479,177.68
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Solution
The fourth proportional to 1,392,079,775.76, 1,921,120,598.16 and 797,479,177.68 is: 1,100,550,199.44
Step by Step Solution
- Step 1: Write the proportion equation
1,392,079,775.76 : 1,921,120,598.16 = 797,479,177.68 : x - Step 2: Convert to fraction form
1,392,079,775.76/1,921,120,598.16 = 797,479,177.68/x - Step 3: Cross multiply
1,392,079,775.76x = 1,921,120,598.16 × 797,479,177.68 - Step 4: Simplify right side
1,392,079,775.76x = 1,532,053,674,844,746,496 - Step 5: Solve for x
x = 1,532,053,674,844,746,496/1,392,079,775.76 - Step 6: Final answer
x = 1,100,550,199.44
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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.