Finding the Fourth Proportional to 1,989,365,232.84, 2,745,275,928.35 and 1,097,272,800.78
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Solution
The fourth proportional to 1,989,365,232.84, 2,745,275,928.35 and 1,097,272,800.78 is: 1,514,209,938.47
Step by Step Solution
- Step 1: Write the proportion equation
1,989,365,232.84 : 2,745,275,928.35 = 1,097,272,800.78 : x - Step 2: Convert to fraction form
1,989,365,232.84/2,745,275,928.35 = 1,097,272,800.78/x - Step 3: Cross multiply
1,989,365,232.84x = 2,745,275,928.35 × 1,097,272,800.78 - Step 4: Simplify right side
1,989,365,232.84x = 3,012,316,606,809,032,192 - Step 5: Solve for x
x = 3,012,316,606,809,032,192/1,989,365,232.84 - Step 6: Final answer
x = 1,514,209,938.47
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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.