Finding the Fourth Proportional to 1,121,649,561.56, 1,547,935,653.84 and 675,753,291.20
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Solution
The fourth proportional to 1,121,649,561.56, 1,547,935,653.84 and 675,753,291.20 is: 932,575,243.19
Step by Step Solution
- Step 1: Write the proportion equation
1,121,649,561.56 : 1,547,935,653.84 = 675,753,291.20 : x - Step 2: Convert to fraction form
1,121,649,561.56/1,547,935,653.84 = 675,753,291.20/x - Step 3: Cross multiply
1,121,649,561.56x = 1,547,935,653.84 × 675,753,291.20 - Step 4: Simplify right side
1,121,649,561.56x = 1,046,022,612,648,203,904 - Step 5: Solve for x
x = 1,046,022,612,648,203,904/1,121,649,561.56 - Step 6: Final answer
x = 932,575,243.19
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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.