Finding the Fourth Proportional to 620,402.55, 855,937.49 and 405,668.31
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Solution
The fourth proportional to 620,402.55, 855,937.49 and 405,668.31 is: 559,679.70
Step by Step Solution
- Step 1: Write the proportion equation
620,402.55 : 855,937.49 = 405,668.31 : x - Step 2: Convert to fraction form
620,402.55/855,937.49 = 405,668.31/x - Step 3: Cross multiply
620,402.55x = 855,937.49 × 405,668.31 - Step 4: Simplify right side
620,402.55x = 347,226,710,754.25 - Step 5: Solve for x
x = 347,226,710,754.25/620,402.55 - Step 6: Final answer
x = 559,679.70
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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.