Finding the Fourth Proportional to 1,678,542,346.64, 2,316,395,639.84 and 915,603,042.80
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Solution
The fourth proportional to 1,678,542,346.64, 2,316,395,639.84 and 915,603,042.80 is: 1,263,536,127.29
Step by Step Solution
- Step 1: Write the proportion equation
1,678,542,346.64 : 2,316,395,639.84 = 915,603,042.80 : x - Step 2: Convert to fraction form
1,678,542,346.64/2,316,395,639.84 = 915,603,042.80/x - Step 3: Cross multiply
1,678,542,346.64x = 2,316,395,639.84 × 915,603,042.80 - Step 4: Simplify right side
1,678,542,346.64x = 2,120,898,896,166,157,056 - Step 5: Solve for x
x = 2,120,898,896,166,157,056/1,678,542,346.64 - Step 6: Final answer
x = 1,263,536,127.29
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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.