Finding the Fourth Proportional to 780,021.80, 1,170,032.70 and 425,727.80
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Solution
The fourth proportional to 780,021.80, 1,170,032.70 and 425,727.80 is: 638,591.70
Step by Step Solution
- Step 1: Write the proportion equation
780,021.80 : 1,170,032.70 = 425,727.80 : x - Step 2: Convert to fraction form
780,021.80/1,170,032.70 = 425,727.80/x - Step 3: Cross multiply
780,021.80x = 1,170,032.70 × 425,727.80 - Step 4: Simplify right side
780,021.80x = 498,115,447,299.06 - Step 5: Solve for x
x = 498,115,447,299.06/780,021.80 - Step 6: Final answer
x = 638,591.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.