Finding the Fourth Proportional to 1,291,776.42, 1,782,627.84 and 718,811.58
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Solution
The fourth proportional to 1,291,776.42, 1,782,627.84 and 718,811.58 is: 991,946.84
Step by Step Solution
- Step 1: Write the proportion equation
1,291,776.42 : 1,782,627.84 = 718,811.58 : x - Step 2: Convert to fraction form
1,291,776.42/1,782,627.84 = 718,811.58/x - Step 3: Cross multiply
1,291,776.42x = 1,782,627.84 × 718,811.58 - Step 4: Simplify right side
1,291,776.42x = 1,281,373,534,222.39 - Step 5: Solve for x
x = 1,281,373,534,222.39/1,291,776.42 - Step 6: Final answer
x = 991,946.84
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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.