Finding the Fourth Proportional to 860,149.80, 1,187,078.58 and 478,212.12
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Solution
The fourth proportional to 860,149.80, 1,187,078.58 and 478,212.12 is: 659,972.67
Step by Step Solution
- Step 1: Write the proportion equation
860,149.80 : 1,187,078.58 = 478,212.12 : x - Step 2: Convert to fraction form
860,149.80/1,187,078.58 = 478,212.12/x - Step 3: Cross multiply
860,149.80x = 1,187,078.58 × 478,212.12 - Step 4: Simplify right side
860,149.80x = 567,675,364,348.39 - Step 5: Solve for x
x = 567,675,364,348.39/860,149.80 - Step 6: Final answer
x = 659,972.67
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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.