Finding the Fourth Proportional to 989,039.20, 1,364,874.84 and 536,330.08
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Solution
The fourth proportional to 989,039.20, 1,364,874.84 and 536,330.08 is: 740,135.91
Step by Step Solution
- Step 1: Write the proportion equation
989,039.20 : 1,364,874.84 = 536,330.08 : x - Step 2: Convert to fraction form
989,039.20/1,364,874.84 = 536,330.08/x - Step 3: Cross multiply
989,039.20x = 1,364,874.84 × 536,330.08 - Step 4: Simplify right side
989,039.20x = 732,023,432,127.19 - Step 5: Solve for x
x = 732,023,432,127.19/989,039.20 - Step 6: Final answer
x = 740,135.91
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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.