Finding the Fourth Proportional to 442,948.80, 611,056.80 and 289,919.64
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Solution
The fourth proportional to 442,948.80, 611,056.80 and 289,919.64 is: 399,949.99
Step by Step Solution
- Step 1: Write the proportion equation
442,948.80 : 611,056.80 = 289,919.64 : x - Step 2: Convert to fraction form
442,948.80/611,056.80 = 289,919.64/x - Step 3: Cross multiply
442,948.80x = 611,056.80 × 289,919.64 - Step 4: Simplify right side
442,948.80x = 177,157,367,475.55 - Step 5: Solve for x
x = 177,157,367,475.55/442,948.80 - Step 6: Final answer
x = 399,949.99
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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.