Finding the Fourth Proportional to 1,382,965,896.24, 1,908,507,740.76 and 756,420,926.76
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Solution
The fourth proportional to 1,382,965,896.24, 1,908,507,740.76 and 756,420,926.76 is: 1,043,868,976.03
Step by Step Solution
- Step 1: Write the proportion equation
1,382,965,896.24 : 1,908,507,740.76 = 756,420,926.76 : x - Step 2: Convert to fraction form
1,382,965,896.24/1,908,507,740.76 = 756,420,926.76/x - Step 3: Cross multiply
1,382,965,896.24x = 1,908,507,740.76 × 756,420,926.76 - Step 4: Simplify right side
1,382,965,896.24x = 1,443,635,193,994,312,960 - Step 5: Solve for x
x = 1,443,635,193,994,312,960/1,382,965,896.24 - Step 6: Final answer
x = 1,043,868,976.03
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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.