Finding the Fourth Proportional to 1,398,035,232.81, 1,929,329,523.81 and 762,996,455.51
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Solution
The fourth proportional to 1,398,035,232.81, 1,929,329,523.81 and 762,996,455.51 is: 1,052,957,431.70
Step by Step Solution
- Step 1: Write the proportion equation
1,398,035,232.81 : 1,929,329,523.81 = 762,996,455.51 : x - Step 2: Convert to fraction form
1,398,035,232.81/1,929,329,523.81 = 762,996,455.51/x - Step 3: Cross multiply
1,398,035,232.81x = 1,929,329,523.81 × 762,996,455.51 - Step 4: Simplify right side
1,398,035,232.81x = 1,472,071,588,168,179,456 - Step 5: Solve for x
x = 1,472,071,588,168,179,456/1,398,035,232.81 - Step 6: Final answer
x = 1,052,957,431.70
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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.