Finding the Fourth Proportional to 528,669.57, 729,544.47 and 286,947.05
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Solution
The fourth proportional to 528,669.57, 729,544.47 and 286,947.05 is: 395,976.32
Step by Step Solution
- Step 1: Write the proportion equation
528,669.57 : 729,544.47 = 286,947.05 : x - Step 2: Convert to fraction form
528,669.57/729,544.47 = 286,947.05/x - Step 3: Cross multiply
528,669.57x = 729,544.47 × 286,947.05 - Step 4: Simplify right side
528,669.57x = 209,340,629,862.59 - Step 5: Solve for x
x = 209,340,629,862.59/528,669.57 - Step 6: Final answer
x = 395,976.32
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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.