Finding the Fourth Proportional to 1,421,155.20, 1,961,394.21 and 904,744.02
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Solution
The fourth proportional to 1,421,155.20, 1,961,394.21 and 904,744.02 is: 1,248,674.09
Step by Step Solution
- Step 1: Write the proportion equation
1,421,155.20 : 1,961,394.21 = 904,744.02 : x - Step 2: Convert to fraction form
1,421,155.20/1,961,394.21 = 904,744.02/x - Step 3: Cross multiply
1,421,155.20x = 1,961,394.21 × 904,744.02 - Step 4: Simplify right side
1,421,155.20x = 1,774,559,672,107.46 - Step 5: Solve for x
x = 1,774,559,672,107.46/1,421,155.20 - Step 6: Final answer
x = 1,248,674.09
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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.