Finding the Fourth Proportional to 1,489,526,932.68, 2,055,471,197.76 and 820,457,574.48
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Solution
The fourth proportional to 1,489,526,932.68, 2,055,471,197.76 and 820,457,574.48 is: 1,132,189,607.54
Step by Step Solution
- Step 1: Write the proportion equation
1,489,526,932.68 : 2,055,471,197.76 = 820,457,574.48 : x - Step 2: Convert to fraction form
1,489,526,932.68/2,055,471,197.76 = 820,457,574.48/x - Step 3: Cross multiply
1,489,526,932.68x = 2,055,471,197.76 × 820,457,574.48 - Step 4: Simplify right side
1,489,526,932.68x = 1,686,426,913,327,670,016 - Step 5: Solve for x
x = 1,686,426,913,327,670,016/1,489,526,932.68 - Step 6: Final answer
x = 1,132,189,607.54
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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.