Finding the Fourth Proportional to 728,312.01, 1,005,074.91 and 422,570.49
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Solution
The fourth proportional to 728,312.01, 1,005,074.91 and 422,570.49 is: 583,149.79
Step by Step Solution
- Step 1: Write the proportion equation
728,312.01 : 1,005,074.91 = 422,570.49 : x - Step 2: Convert to fraction form
728,312.01/1,005,074.91 = 422,570.49/x - Step 3: Cross multiply
728,312.01x = 1,005,074.91 × 422,570.49 - Step 4: Simplify right side
728,312.01x = 424,714,997,205.41 - Step 5: Solve for x
x = 424,714,997,205.41/728,312.01 - Step 6: Final answer
x = 583,149.79
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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.