Finding the Fourth Proportional to 717,180.26, 989,708.80 and 399,228.26
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Solution
The fourth proportional to 717,180.26, 989,708.80 and 399,228.26 is: 550,935.02
Step by Step Solution
- Step 1: Write the proportion equation
717,180.26 : 989,708.80 = 399,228.26 : x - Step 2: Convert to fraction form
717,180.26/989,708.80 = 399,228.26/x - Step 3: Cross multiply
717,180.26x = 989,708.80 × 399,228.26 - Step 4: Simplify right side
717,180.26x = 395,119,722,130.69 - Step 5: Solve for x
x = 395,119,722,130.69/717,180.26 - Step 6: Final answer
x = 550,935.02
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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.