Finding the Fourth Proportional to 515,811.74, 711,871.35 and 289,458.14
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Solution
The fourth proportional to 515,811.74, 711,871.35 and 289,458.14 is: 399,480.94
Step by Step Solution
- Step 1: Write the proportion equation
515,811.74 : 711,871.35 = 289,458.14 : x - Step 2: Convert to fraction form
515,811.74/711,871.35 = 289,458.14/x - Step 3: Cross multiply
515,811.74x = 711,871.35 × 289,458.14 - Step 4: Simplify right side
515,811.74x = 206,056,956,890.29 - Step 5: Solve for x
x = 206,056,956,890.29/515,811.74 - Step 6: Final answer
x = 399,480.94
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.