Finding the Fourth Proportional to 1,987,426,330.32, 2,742,612,754.20 and 1,083,190,409.28
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Solution
The fourth proportional to 1,987,426,330.32, 2,742,612,754.20 and 1,083,190,409.28 is: 1,494,783,372.04
Step by Step Solution
- Step 1: Write the proportion equation
1,987,426,330.32 : 2,742,612,754.20 = 1,083,190,409.28 : x - Step 2: Convert to fraction form
1,987,426,330.32/2,742,612,754.20 = 1,083,190,409.28/x - Step 3: Cross multiply
1,987,426,330.32x = 2,742,612,754.20 × 1,083,190,409.28 - Step 4: Simplify right side
1,987,426,330.32x = 2,970,771,831,718,445,568 - Step 5: Solve for x
x = 2,970,771,831,718,445,568/1,987,426,330.32 - Step 6: Final answer
x = 1,494,783,372.04
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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.