Finding the Fourth Proportional to 528,160.28, 728,861.58 and 286,442.80
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Solution
The fourth proportional to 528,160.28, 728,861.58 and 286,442.80 is: 395,291.28
Step by Step Solution
- Step 1: Write the proportion equation
528,160.28 : 728,861.58 = 286,442.80 : x - Step 2: Convert to fraction form
528,160.28/728,861.58 = 286,442.80/x - Step 3: Cross multiply
528,160.28x = 728,861.58 × 286,442.80 - Step 4: Simplify right side
528,160.28x = 208,777,151,787.62 - Step 5: Solve for x
x = 208,777,151,787.62/528,160.28 - Step 6: Final answer
x = 395,291.28
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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.