Finding the Fourth Proportional to 528,632.67, 728,507.48 and 518,916.99
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Solution
The fourth proportional to 528,632.67, 728,507.48 and 518,916.99 is: 715,118.32
Step by Step Solution
- Step 1: Write the proportion equation
528,632.67 : 728,507.48 = 518,916.99 : x - Step 2: Convert to fraction form
528,632.67/728,507.48 = 518,916.99/x - Step 3: Cross multiply
528,632.67x = 728,507.48 × 518,916.99 - Step 4: Simplify right side
528,632.67x = 378,034,906,119.50 - Step 5: Solve for x
x = 378,034,906,119.50/528,632.67 - Step 6: Final answer
x = 715,118.32
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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.