Finding the Fourth Proportional to 527,157.31, 727,477.40 and 285,439.99
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Solution
The fourth proportional to 527,157.31, 727,477.40 and 285,439.99 is: 393,907.36
Step by Step Solution
- Step 1: Write the proportion equation
527,157.31 : 727,477.40 = 285,439.99 : x - Step 2: Convert to fraction form
527,157.31/727,477.40 = 285,439.99/x - Step 3: Cross multiply
527,157.31x = 727,477.40 × 285,439.99 - Step 4: Simplify right side
527,157.31x = 207,651,141,781.23 - Step 5: Solve for x
x = 207,651,141,781.23/527,157.31 - Step 6: Final answer
x = 393,907.36
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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.