Finding the Fourth Proportional to 698,553.12, 1,047,083.52 and 398,387.36
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Solution
The fourth proportional to 698,553.12, 1,047,083.52 and 398,387.36 is: 597,155.50
Step by Step Solution
- Step 1: Write the proportion equation
698,553.12 : 1,047,083.52 = 398,387.36 : x - Step 2: Convert to fraction form
698,553.12/1,047,083.52 = 398,387.36/x - Step 3: Cross multiply
698,553.12x = 1,047,083.52 × 398,387.36 - Step 4: Simplify right side
698,553.12x = 417,144,839,232.31 - Step 5: Solve for x
x = 417,144,839,232.31/698,553.12 - Step 6: Final answer
x = 597,155.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.