Finding the Fourth Proportional to 528,840.36, 729,795.60 and 287,118.09
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Solution
The fourth proportional to 528,840.36, 729,795.60 and 287,118.09 is: 396,220.74
Step by Step Solution
- Step 1: Write the proportion equation
528,840.36 : 729,795.60 = 287,118.09 : x - Step 2: Convert to fraction form
528,840.36/729,795.60 = 287,118.09/x - Step 3: Cross multiply
528,840.36x = 729,795.60 × 287,118.09 - Step 4: Simplify right side
528,840.36x = 209,537,518,762.40 - Step 5: Solve for x
x = 209,537,518,762.40/528,840.36 - Step 6: Final answer
x = 396,220.74
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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.