Finding the Fourth Proportional to 1,913,246.21, 2,640,279.61 and 1,053,806.49
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Solution
The fourth proportional to 1,913,246.21, 2,640,279.61 and 1,053,806.49 is: 1,454,252.87
Step by Step Solution
- Step 1: Write the proportion equation
1,913,246.21 : 2,640,279.61 = 1,053,806.49 : x - Step 2: Convert to fraction form
1,913,246.21/2,640,279.61 = 1,053,806.49/x - Step 3: Cross multiply
1,913,246.21x = 2,640,279.61 × 1,053,806.49 - Step 4: Simplify right side
1,913,246.21x = 2,782,343,788,432.67 - Step 5: Solve for x
x = 2,782,343,788,432.67/1,913,246.21 - Step 6: Final answer
x = 1,454,252.87
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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.