Finding the Fourth Proportional to 398,581,520.80, 597,872,281.20 and 374,347,811.20
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Solution
The fourth proportional to 398,581,520.80, 597,872,281.20 and 374,347,811.20 is: 561,521,716.80
Step by Step Solution
- Step 1: Write the proportion equation
398,581,520.80 : 597,872,281.20 = 374,347,811.20 : x - Step 2: Convert to fraction form
398,581,520.80/597,872,281.20 = 374,347,811.20/x - Step 3: Cross multiply
398,581,520.80x = 597,872,281.20 × 374,347,811.20 - Step 4: Simplify right side
398,581,520.80x = 223,812,179,844,370,912 - Step 5: Solve for x
x = 223,812,179,844,370,912/398,581,520.80 - Step 6: Final answer
x = 561,521,716.80
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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.