Finding the Fourth Proportional to 639,128.14, 958,690.98 and 372,701.83
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Solution
The fourth proportional to 639,128.14, 958,690.98 and 372,701.83 is: 559,052.02
Step by Step Solution
- Step 1: Write the proportion equation
639,128.14 : 958,690.98 = 372,701.83 : x - Step 2: Convert to fraction form
639,128.14/958,690.98 = 372,701.83/x - Step 3: Cross multiply
639,128.14x = 958,690.98 × 372,701.83 - Step 4: Simplify right side
639,128.14x = 357,305,877,857.04 - Step 5: Solve for x
x = 357,305,877,857.04/639,128.14 - Step 6: Final answer
x = 559,052.02
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.