Finding the Fourth Proportional to 528,512.19, 729,348.78 and 286,794.81
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Solution
The fourth proportional to 528,512.19, 729,348.78 and 286,794.81 is: 395,777.90
Step by Step Solution
- Step 1: Write the proportion equation
528,512.19 : 729,348.78 = 286,794.81 : x - Step 2: Convert to fraction form
528,512.19/729,348.78 = 286,794.81/x - Step 3: Cross multiply
528,512.19x = 729,348.78 × 286,794.81 - Step 4: Simplify right side
528,512.19x = 209,173,444,246.09 - Step 5: Solve for x
x = 209,173,444,246.09/528,512.19 - Step 6: Final answer
x = 395,777.90
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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.