Finding the Fourth Proportional to 457,588.10, 631,257.99 and 287,915.78
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Solution
The fourth proportional to 457,588.10, 631,257.99 and 287,915.78 is: 397,189.39
Step by Step Solution
- Step 1: Write the proportion equation
457,588.10 : 631,257.99 = 287,915.78 : x - Step 2: Convert to fraction form
457,588.10/631,257.99 = 287,915.78/x - Step 3: Cross multiply
457,588.10x = 631,257.99 × 287,915.78 - Step 4: Simplify right side
457,588.10x = 181,749,136,572.08 - Step 5: Solve for x
x = 181,749,136,572.08/457,588.10 - Step 6: Final answer
x = 397,189.39
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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.