Finding the Fourth Proportional to 1,490,408.40, 2,235,904.20 and 637,478.40
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Solution
The fourth proportional to 1,490,408.40, 2,235,904.20 and 637,478.40 is: 956,342.32
Step by Step Solution
- Step 1: Write the proportion equation
1,490,408.40 : 2,235,904.20 = 637,478.40 : x - Step 2: Convert to fraction form
1,490,408.40/2,235,904.20 = 637,478.40/x - Step 3: Cross multiply
1,490,408.40x = 2,235,904.20 × 637,478.40 - Step 4: Simplify right side
1,490,408.40x = 1,425,340,631,969.28 - Step 5: Solve for x
x = 1,425,340,631,969.28/1,490,408.40 - Step 6: Final answer
x = 956,342.32
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1.5x scale
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.