Finding the Fourth Proportional to 515,709.99, 711,692.06 and 289,372.23
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Solution
The fourth proportional to 515,709.99, 711,692.06 and 289,372.23 is: 399,340.56
Step by Step Solution
- Step 1: Write the proportion equation
515,709.99 : 711,692.06 = 289,372.23 : x - Step 2: Convert to fraction form
515,709.99/711,692.06 = 289,372.23/x - Step 3: Cross multiply
515,709.99x = 711,692.06 × 289,372.23 - Step 4: Simplify right side
515,709.99x = 205,943,918,475.49 - Step 5: Solve for x
x = 205,943,918,475.49/515,709.99 - Step 6: Final answer
x = 399,340.56
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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.