Finding the Fourth Proportional to 668,503.62, 922,446.09 and 378,154.80
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Solution
The fourth proportional to 668,503.62, 922,446.09 and 378,154.80 is: 521,803.33
Step by Step Solution
- Step 1: Write the proportion equation
668,503.62 : 922,446.09 = 378,154.80 : x - Step 2: Convert to fraction form
668,503.62/922,446.09 = 378,154.80/x - Step 3: Cross multiply
668,503.62x = 922,446.09 × 378,154.80 - Step 4: Simplify right side
668,503.62x = 348,827,416,674.73 - Step 5: Solve for x
x = 348,827,416,674.73/668,503.62 - Step 6: Final answer
x = 521,803.33
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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.