Finding the Fourth Proportional to 920,722.50, 1,270,156.97 and 715,368.06
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Solution
The fourth proportional to 920,722.50, 1,270,156.97 and 715,368.06 is: 986,865.99
Step by Step Solution
- Step 1: Write the proportion equation
920,722.50 : 1,270,156.97 = 715,368.06 : x - Step 2: Convert to fraction form
920,722.50/1,270,156.97 = 715,368.06/x - Step 3: Cross multiply
920,722.50x = 1,270,156.97 × 715,368.06 - Step 4: Simplify right side
920,722.50x = 908,629,723,947.54 - Step 5: Solve for x
x = 908,629,723,947.54/920,722.50 - Step 6: Final answer
x = 986,865.99
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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.