Finding the Fourth Proportional to 1,117,631,505.62, 1,542,261,973.02 and 615,812,206.84
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Solution
The fourth proportional to 1,117,631,505.62, 1,542,261,973.02 and 615,812,206.84 is: 849,782,548.50
Step by Step Solution
- Step 1: Write the proportion equation
1,117,631,505.62 : 1,542,261,973.02 = 615,812,206.84 : x - Step 2: Convert to fraction form
1,117,631,505.62/1,542,261,973.02 = 615,812,206.84/x - Step 3: Cross multiply
1,117,631,505.62x = 1,542,261,973.02 × 615,812,206.84 - Step 4: Simplify right side
1,117,631,505.62x = 949,743,749,128,234,752 - Step 5: Solve for x
x = 949,743,749,128,234,752/1,117,631,505.62 - Step 6: Final answer
x = 849,782,548.50
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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.