Finding the Fourth Proportional to 728,335.09, 1,005,155.63 and 422,515.95
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Solution
The fourth proportional to 728,335.09, 1,005,155.63 and 422,515.95 is: 583,102.88
Step by Step Solution
- Step 1: Write the proportion equation
728,335.09 : 1,005,155.63 = 422,515.95 : x - Step 2: Convert to fraction form
728,335.09/1,005,155.63 = 422,515.95/x - Step 3: Cross multiply
728,335.09x = 1,005,155.63 × 422,515.95 - Step 4: Simplify right side
728,335.09x = 424,694,285,907.30 - Step 5: Solve for x
x = 424,694,285,907.30/728,335.09 - Step 6: Final answer
x = 583,102.88
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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.