Finding the Fourth Proportional to 690,905.34, 1,035,571.84 and 420,436.95
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Solution
The fourth proportional to 690,905.34, 1,035,571.84 and 420,436.95 is: 630,177.02
Step by Step Solution
- Step 1: Write the proportion equation
690,905.34 : 1,035,571.84 = 420,436.95 : x - Step 2: Convert to fraction form
690,905.34/1,035,571.84 = 420,436.95/x - Step 3: Cross multiply
690,905.34x = 1,035,571.84 × 420,436.95 - Step 4: Simplify right side
690,905.34x = 435,392,668,080.31 - Step 5: Solve for x
x = 435,392,668,080.31/690,905.34 - Step 6: Final answer
x = 630,177.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.