Finding the Fourth Proportional to 513,964.77, 709,260.12 and 281,391.21
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Solution
The fourth proportional to 513,964.77, 709,260.12 and 281,391.21 is: 388,313.70
Step by Step Solution
- Step 1: Write the proportion equation
513,964.77 : 709,260.12 = 281,391.21 : x - Step 2: Convert to fraction form
513,964.77/709,260.12 = 281,391.21/x - Step 3: Cross multiply
513,964.77x = 709,260.12 × 281,391.21 - Step 4: Simplify right side
513,964.77x = 199,579,563,371.55 - Step 5: Solve for x
x = 199,579,563,371.55/513,964.77 - Step 6: Final answer
x = 388,313.70
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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.