Finding the Fourth Proportional to 1,390,903.18, 2,086,354.80 and 759,472.54
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Solution
The fourth proportional to 1,390,903.18, 2,086,354.80 and 759,472.54 is: 1,139,208.83
Step by Step Solution
- Step 1: Write the proportion equation
1,390,903.18 : 2,086,354.80 = 759,472.54 : x - Step 2: Convert to fraction form
1,390,903.18/2,086,354.80 = 759,472.54/x - Step 3: Cross multiply
1,390,903.18x = 2,086,354.80 × 759,472.54 - Step 4: Simplify right side
1,390,903.18x = 1,584,529,179,297.19 - Step 5: Solve for x
x = 1,584,529,179,297.19/1,390,903.18 - Step 6: Final answer
x = 1,139,208.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.