Finding the Fourth Proportional to 528,328.56, 728,902.08 and 347,138.08
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Solution
The fourth proportional to 528,328.56, 728,902.08 and 347,138.08 is: 478,924.84
Step by Step Solution
- Step 1: Write the proportion equation
528,328.56 : 728,902.08 = 347,138.08 : x - Step 2: Convert to fraction form
528,328.56/728,902.08 = 347,138.08/x - Step 3: Cross multiply
528,328.56x = 728,902.08 × 347,138.08 - Step 4: Simplify right side
528,328.56x = 253,029,668,559.21 - Step 5: Solve for x
x = 253,029,668,559.21/528,328.56 - Step 6: Final answer
x = 478,924.84
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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.