Finding the Fourth Proportional to 515,289.57, 711,106.62 and 385,998.99
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Solution
The fourth proportional to 515,289.57, 711,106.62 and 385,998.99 is: 532,683.86
Step by Step Solution
- Step 1: Write the proportion equation
515,289.57 : 711,106.62 = 385,998.99 : x - Step 2: Convert to fraction form
515,289.57/711,106.62 = 385,998.99/x - Step 3: Cross multiply
515,289.57x = 711,106.62 × 385,998.99 - Step 4: Simplify right side
515,289.57x = 274,486,437,102.31 - Step 5: Solve for x
x = 274,486,437,102.31/515,289.57 - Step 6: Final answer
x = 532,683.86
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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.