Finding the Fourth Proportional to 1,974,428.13, 2,961,642.19 and 478,520.13
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Solution
The fourth proportional to 1,974,428.13, 2,961,642.19 and 478,520.13 is: 717,780.19
Step by Step Solution
- Step 1: Write the proportion equation
1,974,428.13 : 2,961,642.19 = 478,520.13 : x - Step 2: Convert to fraction form
1,974,428.13/2,961,642.19 = 478,520.13/x - Step 3: Cross multiply
1,974,428.13x = 2,961,642.19 × 478,520.13 - Step 4: Simplify right side
1,974,428.13x = 1,417,205,405,772.28 - Step 5: Solve for x
x = 1,417,205,405,772.28/1,974,428.13 - Step 6: Final answer
x = 717,780.19
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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.