Finding the Fourth Proportional to 1,638,212.36, 2,260,864.50 and 913,294.76
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Solution
The fourth proportional to 1,638,212.36, 2,260,864.50 and 913,294.76 is: 1,260,420.05
Step by Step Solution
- Step 1: Write the proportion equation
1,638,212.36 : 2,260,864.50 = 913,294.76 : x - Step 2: Convert to fraction form
1,638,212.36/2,260,864.50 = 913,294.76/x - Step 3: Cross multiply
1,638,212.36x = 2,260,864.50 × 913,294.76 - Step 4: Simplify right side
1,638,212.36x = 2,064,835,700,920.02 - Step 5: Solve for x
x = 2,064,835,700,920.02/1,638,212.36 - Step 6: Final answer
x = 1,260,420.05
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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.