Finding the Fourth Proportional to 1,130,858.56, 1,560,564.80 and 621,560.80
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Solution
The fourth proportional to 1,130,858.56, 1,560,564.80 and 621,560.80 is: 857,742.90
Step by Step Solution
- Step 1: Write the proportion equation
1,130,858.56 : 1,560,564.80 = 621,560.80 : x - Step 2: Convert to fraction form
1,130,858.56/1,560,564.80 = 621,560.80/x - Step 3: Cross multiply
1,130,858.56x = 1,560,564.80 × 621,560.80 - Step 4: Simplify right side
1,130,858.56x = 969,985,905,539.84 - Step 5: Solve for x
x = 969,985,905,539.84/1,130,858.56 - Step 6: Final answer
x = 857,742.90
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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.