Finding the Fourth Proportional to 719,490.40, 992,890.81 and 397,193.63
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Solution
The fourth proportional to 719,490.40, 992,890.81 and 397,193.63 is: 548,123.92
Step by Step Solution
- Step 1: Write the proportion equation
719,490.40 : 992,890.81 = 397,193.63 : x - Step 2: Convert to fraction form
719,490.40/992,890.81 = 397,193.63/x - Step 3: Cross multiply
719,490.40x = 992,890.81 × 397,193.63 - Step 4: Simplify right side
719,490.40x = 394,369,900,549.58 - Step 5: Solve for x
x = 394,369,900,549.58/719,490.40 - Step 6: Final answer
x = 548,123.92
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1.5x scale
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.