Finding the Fourth Proportional to 651,715.61, 899,420.81 and 361,418.09
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Solution
The fourth proportional to 651,715.61, 899,420.81 and 361,418.09 is: 498,786.50
Step by Step Solution
- Step 1: Write the proportion equation
651,715.61 : 899,420.81 = 361,418.09 : x - Step 2: Convert to fraction form
651,715.61/899,420.81 = 361,418.09/x - Step 3: Cross multiply
651,715.61x = 899,420.81 × 361,418.09 - Step 4: Simplify right side
651,715.61x = 325,066,950,011.50 - Step 5: Solve for x
x = 325,066,950,011.50/651,715.61 - Step 6: Final answer
x = 498,786.50
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1.5x scale
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.