Finding the Fourth Proportional to 840,709.55, 1,160,204.84 and 478,185.65
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Solution
The fourth proportional to 840,709.55, 1,160,204.84 and 478,185.65 is: 659,910.79
Step by Step Solution
- Step 1: Write the proportion equation
840,709.55 : 1,160,204.84 = 478,185.65 : x - Step 2: Convert to fraction form
840,709.55/1,160,204.84 = 478,185.65/x - Step 3: Cross multiply
840,709.55x = 1,160,204.84 × 478,185.65 - Step 4: Simplify right side
840,709.55x = 554,793,297,356.59 - Step 5: Solve for x
x = 554,793,297,356.59/840,709.55 - Step 6: Final answer
x = 659,910.79
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1.5x scale
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.