Finding the Fourth Proportional to 612,350.10, 918,415.80 and 387,307.80
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Solution
The fourth proportional to 612,350.10, 918,415.80 and 387,307.80 is: 580,892.54
Step by Step Solution
- Step 1: Write the proportion equation
612,350.10 : 918,415.80 = 387,307.80 : x - Step 2: Convert to fraction form
612,350.10/918,415.80 = 387,307.80/x - Step 3: Cross multiply
612,350.10x = 918,415.80 × 387,307.80 - Step 4: Simplify right side
612,350.10x = 355,709,602,983.24 - Step 5: Solve for x
x = 355,709,602,983.24/612,350.10 - Step 6: Final answer
x = 580,892.54
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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.