Finding the Fourth Proportional to 515,472.18, 711,317.42 and 286,014.92
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Solution
The fourth proportional to 515,472.18, 711,317.42 and 286,014.92 is: 394,681.62
Step by Step Solution
- Step 1: Write the proportion equation
515,472.18 : 711,317.42 = 286,014.92 : x - Step 2: Convert to fraction form
515,472.18/711,317.42 = 286,014.92/x - Step 3: Cross multiply
515,472.18x = 711,317.42 × 286,014.92 - Step 4: Simplify right side
515,472.18x = 203,447,394,801.80 - Step 5: Solve for x
x = 203,447,394,801.80/515,472.18 - Step 6: Final answer
x = 394,681.62
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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.