Finding the Fourth Proportional to 528,157.20, 728,703.36 and 344,449.20
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Solution
The fourth proportional to 528,157.20, 728,703.36 and 344,449.20 is: 475,239.74
Step by Step Solution
- Step 1: Write the proportion equation
528,157.20 : 728,703.36 = 344,449.20 : x - Step 2: Convert to fraction form
528,157.20/728,703.36 = 344,449.20/x - Step 3: Cross multiply
528,157.20x = 728,703.36 × 344,449.20 - Step 4: Simplify right side
528,157.20x = 251,001,289,389.31 - Step 5: Solve for x
x = 251,001,289,389.31/528,157.20 - Step 6: Final answer
x = 475,239.74
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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.