Finding the Fourth Proportional to 717,258.51, 989,816.76 and 394,967.84
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Solution
The fourth proportional to 717,258.51, 989,816.76 and 394,967.84 is: 545,055.62
Step by Step Solution
- Step 1: Write the proportion equation
717,258.51 : 989,816.76 = 394,967.84 : x - Step 2: Convert to fraction form
717,258.51/989,816.76 = 394,967.84/x - Step 3: Cross multiply
717,258.51x = 989,816.76 × 394,967.84 - Step 4: Simplify right side
717,258.51x = 390,945,782,743.92 - Step 5: Solve for x
x = 390,945,782,743.92/717,258.51 - Step 6: Final answer
x = 545,055.62
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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.