Finding the Fourth Proportional to 528,104.21, 728,784.23 and 286,386.75
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Solution
The fourth proportional to 528,104.21, 728,784.23 and 286,386.75 is: 395,213.94
Step by Step Solution
- Step 1: Write the proportion equation
528,104.21 : 728,784.23 = 286,386.75 : x - Step 2: Convert to fraction form
528,104.21/728,784.23 = 286,386.75/x - Step 3: Cross multiply
528,104.21x = 728,784.23 × 286,386.75 - Step 4: Simplify right side
528,104.21x = 208,714,145,649.02 - Step 5: Solve for x
x = 208,714,145,649.02/528,104.21 - Step 6: Final answer
x = 395,213.94
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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.