Finding the Fourth Proportional to 1,299,877,756.80, 1,793,831,304.36 and 742,972,761.24
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Solution
The fourth proportional to 1,299,877,756.80, 1,793,831,304.36 and 742,972,761.24 is: 1,025,302,410.50
Step by Step Solution
- Step 1: Write the proportion equation
1,299,877,756.80 : 1,793,831,304.36 = 742,972,761.24 : x - Step 2: Convert to fraction form
1,299,877,756.80/1,793,831,304.36 = 742,972,761.24/x - Step 3: Cross multiply
1,299,877,756.80x = 1,793,831,304.36 × 742,972,761.24 - Step 4: Simplify right side
1,299,877,756.80x = 1,332,767,797,399,099,904 - Step 5: Solve for x
x = 1,332,767,797,399,099,904/1,299,877,756.80 - Step 6: Final answer
x = 1,025,302,410.50
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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.