Finding the Fourth Proportional to 1,174,421.20, 1,620,709.40 and 637,877.20
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Solution
The fourth proportional to 1,174,421.20, 1,620,709.40 and 637,877.20 is: 880,274.96
Step by Step Solution
- Step 1: Write the proportion equation
1,174,421.20 : 1,620,709.40 = 637,877.20 : x - Step 2: Convert to fraction form
1,174,421.20/1,620,709.40 = 637,877.20/x - Step 3: Cross multiply
1,174,421.20x = 1,620,709.40 × 637,877.20 - Step 4: Simplify right side
1,174,421.20x = 1,033,813,574,085.68 - Step 5: Solve for x
x = 1,033,813,574,085.68/1,174,421.20 - Step 6: Final answer
x = 880,274.96
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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.