Finding the Fourth Proportional to 865,397.69, 1,194,245.82 and 478,202.31
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Solution
The fourth proportional to 865,397.69, 1,194,245.82 and 478,202.31 is: 659,917.54
Step by Step Solution
- Step 1: Write the proportion equation
865,397.69 : 1,194,245.82 = 478,202.31 : x - Step 2: Convert to fraction form
865,397.69/1,194,245.82 = 478,202.31/x - Step 3: Cross multiply
865,397.69x = 1,194,245.82 × 478,202.31 - Step 4: Simplify right side
865,397.69x = 571,091,109,831.84 - Step 5: Solve for x
x = 571,091,109,831.84/865,397.69 - Step 6: Final answer
x = 659,917.54
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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.