Finding the Fourth Proportional to 691,647.68, 954,551.04 and 405,409.88
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Solution
The fourth proportional to 691,647.68, 954,551.04 and 405,409.88 is: 559,510.91
Step by Step Solution
- Step 1: Write the proportion equation
691,647.68 : 954,551.04 = 405,409.88 : x - Step 2: Convert to fraction form
691,647.68/954,551.04 = 405,409.88/x - Step 3: Cross multiply
691,647.68x = 954,551.04 × 405,409.88 - Step 4: Simplify right side
691,647.68x = 386,984,422,580.28 - Step 5: Solve for x
x = 386,984,422,580.28/691,647.68 - Step 6: Final answer
x = 559,510.91
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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.