Finding the Fourth Proportional to 717,950.80, 990,769.80 and 395,660.80
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Solution
The fourth proportional to 717,950.80, 990,769.80 and 395,660.80 is: 546,010.63
Step by Step Solution
- Step 1: Write the proportion equation
717,950.80 : 990,769.80 = 395,660.80 : x - Step 2: Convert to fraction form
717,950.80/990,769.80 = 395,660.80/x - Step 3: Cross multiply
717,950.80x = 990,769.80 × 395,660.80 - Step 4: Simplify right side
717,950.80x = 392,008,771,683.84 - Step 5: Solve for x
x = 392,008,771,683.84/717,950.80 - Step 6: Final answer
x = 546,010.63
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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.