Finding the Fourth Proportional to 612,725.80, 919,088.70 and 455,261.80
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Solution
The fourth proportional to 612,725.80, 919,088.70 and 455,261.80 is: 682,892.70
Step by Step Solution
- Step 1: Write the proportion equation
612,725.80 : 919,088.70 = 455,261.80 : x - Step 2: Convert to fraction form
612,725.80/919,088.70 = 455,261.80/x - Step 3: Cross multiply
612,725.80x = 919,088.70 × 455,261.80 - Step 4: Simplify right side
612,725.80x = 418,425,975,921.66 - Step 5: Solve for x
x = 418,425,975,921.66/612,725.80 - Step 6: Final answer
x = 682,892.70
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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.