Finding the Fourth Proportional to 631,774.84, 871,835.70 and 356,130.76
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Solution
The fourth proportional to 631,774.84, 871,835.70 and 356,130.76 is: 491,452.79
Step by Step Solution
- Step 1: Write the proportion equation
631,774.84 : 871,835.70 = 356,130.76 : x - Step 2: Convert to fraction form
631,774.84/871,835.70 = 356,130.76/x - Step 3: Cross multiply
631,774.84x = 871,835.70 × 356,130.76 - Step 4: Simplify right side
631,774.84x = 310,487,510,436.13 - Step 5: Solve for x
x = 310,487,510,436.13/631,774.84 - Step 6: Final answer
x = 491,452.79
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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.