Finding the Fourth Proportional to 1,296,913.47, 1,789,768.56 and 716,135.12
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Solution
The fourth proportional to 1,296,913.47, 1,789,768.56 and 716,135.12 is: 988,281.90
Step by Step Solution
- Step 1: Write the proportion equation
1,296,913.47 : 1,789,768.56 = 716,135.12 : x - Step 2: Convert to fraction form
1,296,913.47/1,789,768.56 = 716,135.12/x - Step 3: Cross multiply
1,296,913.47x = 1,789,768.56 × 716,135.12 - Step 4: Simplify right side
1,296,913.47x = 1,281,716,113,538.98 - Step 5: Solve for x
x = 1,281,716,113,538.98/1,296,913.47 - Step 6: Final answer
x = 988,281.90
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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.