Finding the Fourth Proportional to 509,406.24, 702,984.84 and 318,530.28
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Solution
The fourth proportional to 509,406.24, 702,984.84 and 318,530.28 is: 439,574.43
Step by Step Solution
- Step 1: Write the proportion equation
509,406.24 : 702,984.84 = 318,530.28 : x - Step 2: Convert to fraction form
509,406.24/702,984.84 = 318,530.28/x - Step 3: Cross multiply
509,406.24x = 702,984.84 × 318,530.28 - Step 4: Simplify right side
509,406.24x = 223,921,957,920.96 - Step 5: Solve for x
x = 223,921,957,920.96/509,406.24 - Step 6: Final answer
x = 439,574.43
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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.