Finding the Fourth Proportional to 780,059.80, 1,170,089.70 and 425,765.80
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Solution
The fourth proportional to 780,059.80, 1,170,089.70 and 425,765.80 is: 638,648.70
Step by Step Solution
- Step 1: Write the proportion equation
780,059.80 : 1,170,089.70 = 425,765.80 : x - Step 2: Convert to fraction form
780,059.80/1,170,089.70 = 425,765.80/x - Step 3: Cross multiply
780,059.80x = 1,170,089.70 × 425,765.80 - Step 4: Simplify right side
780,059.80x = 498,184,177,192.26 - Step 5: Solve for x
x = 498,184,177,192.26/780,059.80 - Step 6: Final answer
x = 638,648.70
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1.5x scale
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.