Finding the Fourth Proportional to 528,690.26, 729,593.12 and 286,972.79
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Solution
The fourth proportional to 528,690.26, 729,593.12 and 286,972.79 is: 396,022.76
Step by Step Solution
- Step 1: Write the proportion equation
528,690.26 : 729,593.12 = 286,972.79 : x - Step 2: Convert to fraction form
528,690.26/729,593.12 = 286,972.79/x - Step 3: Cross multiply
528,690.26x = 729,593.12 × 286,972.79 - Step 4: Simplify right side
528,690.26x = 209,373,373,600.32 - Step 5: Solve for x
x = 209,373,373,600.32/528,690.26 - Step 6: Final answer
x = 396,022.76
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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.