Finding the Fourth Proportional to 1,386,027.36, 1,912,749.12 and 813,480.48
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Solution
The fourth proportional to 1,386,027.36, 1,912,749.12 and 813,480.48 is: 1,122,621.47
Step by Step Solution
- Step 1: Write the proportion equation
1,386,027.36 : 1,912,749.12 = 813,480.48 : x - Step 2: Convert to fraction form
1,386,027.36/1,912,749.12 = 813,480.48/x - Step 3: Cross multiply
1,386,027.36x = 1,912,749.12 × 813,480.48 - Step 4: Simplify right side
1,386,027.36x = 1,555,984,072,257.18 - Step 5: Solve for x
x = 1,555,984,072,257.18/1,386,027.36 - Step 6: Final answer
x = 1,122,621.47
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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.