Finding the Fourth Proportional to 1,122,647.76, 1,549,276.20 and 613,381.68
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Solution
The fourth proportional to 1,122,647.76, 1,549,276.20 and 613,381.68 is: 846,478.90
Step by Step Solution
- Step 1: Write the proportion equation
1,122,647.76 : 1,549,276.20 = 613,381.68 : x - Step 2: Convert to fraction form
1,122,647.76/1,549,276.20 = 613,381.68/x - Step 3: Cross multiply
1,122,647.76x = 1,549,276.20 × 613,381.68 - Step 4: Simplify right side
1,122,647.76x = 950,297,638,340.02 - Step 5: Solve for x
x = 950,297,638,340.02/1,122,647.76 - Step 6: Final answer
x = 846,478.90
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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.