Finding the Fourth Proportional to 515,393.50, 711,320.79 and 314,306.14
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Solution
The fourth proportional to 515,393.50, 711,320.79 and 314,306.14 is: 433,789.89
Step by Step Solution
- Step 1: Write the proportion equation
515,393.50 : 711,320.79 = 314,306.14 : x - Step 2: Convert to fraction form
515,393.50/711,320.79 = 314,306.14/x - Step 3: Cross multiply
515,393.50x = 711,320.79 × 314,306.14 - Step 4: Simplify right side
515,393.50x = 223,572,491,806.65 - Step 5: Solve for x
x = 223,572,491,806.65/515,393.50 - Step 6: Final answer
x = 433,789.89
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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.