Finding the Fourth Proportional to 613,613.80, 920,420.70 and 560,469.70
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Solution
The fourth proportional to 613,613.80, 920,420.70 and 560,469.70 is: 840,704.55
Step by Step Solution
- Step 1: Write the proportion equation
613,613.80 : 920,420.70 = 560,469.70 : x - Step 2: Convert to fraction form
613,613.80/920,420.70 = 560,469.70/x - Step 3: Cross multiply
613,613.80x = 920,420.70 × 560,469.70 - Step 4: Simplify right side
613,613.80x = 515,867,913,602.79 - Step 5: Solve for x
x = 515,867,913,602.79/613,613.80 - Step 6: Final answer
x = 840,704.55
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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.