Finding the Fourth Proportional to 644,341.08, 889,209.14 and 357,879.62
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Solution
The fourth proportional to 644,341.08, 889,209.14 and 357,879.62 is: 493,884.12
Step by Step Solution
- Step 1: Write the proportion equation
644,341.08 : 889,209.14 = 357,879.62 : x - Step 2: Convert to fraction form
644,341.08/889,209.14 = 357,879.62/x - Step 3: Cross multiply
644,341.08x = 889,209.14 × 357,879.62 - Step 4: Simplify right side
644,341.08x = 318,229,826,568.62 - Step 5: Solve for x
x = 318,229,826,568.62/644,341.08 - Step 6: Final answer
x = 493,884.12
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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.