Finding the Fourth Proportional to 1,358,395,391.79, 1,874,574,371.99 and 763,682,527.05
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Solution
The fourth proportional to 1,358,395,391.79, 1,874,574,371.99 and 763,682,527.05 is: 1,053,875,552.14
Step by Step Solution
- Step 1: Write the proportion equation
1,358,395,391.79 : 1,874,574,371.99 = 763,682,527.05 : x - Step 2: Convert to fraction form
1,358,395,391.79/1,874,574,371.99 = 763,682,527.05/x - Step 3: Cross multiply
1,358,395,391.79x = 1,874,574,371.99 × 763,682,527.05 - Step 4: Simplify right side
1,358,395,391.79x = 1,431,579,693,540,671,232 - Step 5: Solve for x
x = 1,431,579,693,540,671,232/1,358,395,391.79 - Step 6: Final answer
x = 1,053,875,552.14
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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.