Finding the Fourth Proportional to 694,225.70, 958,120.21 and 388,319.07
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Solution
The fourth proportional to 694,225.70, 958,120.21 and 388,319.07 is: 535,929.96
Step by Step Solution
- Step 1: Write the proportion equation
694,225.70 : 958,120.21 = 388,319.07 : x - Step 2: Convert to fraction form
694,225.70/958,120.21 = 388,319.07/x - Step 3: Cross multiply
694,225.70x = 958,120.21 × 388,319.07 - Step 4: Simplify right side
694,225.70x = 372,056,348,895.41 - Step 5: Solve for x
x = 372,056,348,895.41/694,225.70 - Step 6: Final answer
x = 535,929.96
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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.