Finding the Fourth Proportional to 860,130, 1,290,350.66 and 354,409.74
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Solution
The fourth proportional to 860,130, 1,290,350.66 and 354,409.74 is: 531,678.75
Step by Step Solution
- Step 1: Write the proportion equation
860,130 : 1,290,350.66 = 354,409.74 : x - Step 2: Convert to fraction form
860,130/1,290,350.66 = 354,409.74/x - Step 3: Cross multiply
860,130x = 1,290,350.66 × 354,409.74 - Step 4: Simplify right side
860,130x = 457,312,840,147.38 - Step 5: Solve for x
x = 457,312,840,147.38/860,130 - Step 6: Final answer
x = 531,678.75
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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.