Finding the Fourth Proportional to 660,657.92, 911,840.64 and 392,334.08
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Solution
The fourth proportional to 660,657.92, 911,840.64 and 392,334.08 is: 541,499.84
Step by Step Solution
- Step 1: Write the proportion equation
660,657.92 : 911,840.64 = 392,334.08 : x - Step 2: Convert to fraction form
660,657.92/911,840.64 = 392,334.08/x - Step 3: Cross multiply
660,657.92x = 911,840.64 × 392,334.08 - Step 4: Simplify right side
660,657.92x = 357,746,158,601.01 - Step 5: Solve for x
x = 357,746,158,601.01/660,657.92 - Step 6: Final answer
x = 541,499.84
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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.