Finding the Fourth Proportional to 865,398.58, 1,194,243.49 and 478,240.10
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Solution
The fourth proportional to 865,398.58, 1,194,243.49 and 478,240.10 is: 659,967.72
Step by Step Solution
- Step 1: Write the proportion equation
865,398.58 : 1,194,243.49 = 478,240.10 : x - Step 2: Convert to fraction form
865,398.58/1,194,243.49 = 478,240.10/x - Step 3: Cross multiply
865,398.58x = 1,194,243.49 × 478,240.10 - Step 4: Simplify right side
865,398.58x = 571,135,126,081.95 - Step 5: Solve for x
x = 571,135,126,081.95/865,398.58 - Step 6: Final answer
x = 659,967.72
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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.