Finding the Fourth Proportional to 1,640,579.70, 2,460,869.55 and 518,648.70
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Solution
The fourth proportional to 1,640,579.70, 2,460,869.55 and 518,648.70 is: 777,973.05
Step by Step Solution
- Step 1: Write the proportion equation
1,640,579.70 : 2,460,869.55 = 518,648.70 : x - Step 2: Convert to fraction form
1,640,579.70/2,460,869.55 = 518,648.70/x - Step 3: Cross multiply
1,640,579.70x = 2,460,869.55 × 518,648.70 - Step 4: Simplify right side
1,640,579.70x = 1,276,326,792,977.09 - Step 5: Solve for x
x = 1,276,326,792,977.09/1,640,579.70 - Step 6: Final answer
x = 777,973.05
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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.