Finding the Fourth Proportional to 631,827.99, 871,921.36 and 359,895.78
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Solution
The fourth proportional to 631,827.99, 871,921.36 and 359,895.78 is: 496,655.45
Step by Step Solution
- Step 1: Write the proportion equation
631,827.99 : 871,921.36 = 359,895.78 : x - Step 2: Convert to fraction form
631,827.99/871,921.36 = 359,895.78/x - Step 3: Cross multiply
631,827.99x = 871,921.36 × 359,895.78 - Step 4: Simplify right side
631,827.99x = 313,800,812,696.52 - Step 5: Solve for x
x = 313,800,812,696.52/631,827.99 - Step 6: Final answer
x = 496,655.45
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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.