Finding the Fourth Proportional to 528,393.42, 729,176.38 and 286,674.23
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Solution
The fourth proportional to 528,393.42, 729,176.38 and 286,674.23 is: 395,606.89
Step by Step Solution
- Step 1: Write the proportion equation
528,393.42 : 729,176.38 = 286,674.23 : x - Step 2: Convert to fraction form
528,393.42/729,176.38 = 286,674.23/x - Step 3: Cross multiply
528,393.42x = 729,176.38 × 286,674.23 - Step 4: Simplify right side
528,393.42x = 209,036,078,376.94 - Step 5: Solve for x
x = 209,036,078,376.94/528,393.42 - Step 6: Final answer
x = 395,606.89
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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.