Finding the Fourth Proportional to 1,128,145.50, 1,556,840.79 and 618,849.09
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Solution
The fourth proportional to 1,128,145.50, 1,556,840.79 and 618,849.09 is: 854,011.74
Step by Step Solution
- Step 1: Write the proportion equation
1,128,145.50 : 1,556,840.79 = 618,849.09 : x - Step 2: Convert to fraction form
1,128,145.50/1,556,840.79 = 618,849.09/x - Step 3: Cross multiply
1,128,145.50x = 1,556,840.79 × 618,849.09 - Step 4: Simplify right side
1,128,145.50x = 963,449,506,166.38 - Step 5: Solve for x
x = 963,449,506,166.38/1,128,145.50 - Step 6: Final answer
x = 854,011.74
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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.