Finding the Fourth Proportional to 1,688,563.16, 2,330,569.08 and 1,552,381.40
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Solution
The fourth proportional to 1,688,563.16, 2,330,569.08 and 1,552,381.40 is: 2,142,609.87
Step by Step Solution
- Step 1: Write the proportion equation
1,688,563.16 : 2,330,569.08 = 1,552,381.40 : x - Step 2: Convert to fraction form
1,688,563.16/2,330,569.08 = 1,552,381.40/x - Step 3: Cross multiply
1,688,563.16x = 2,330,569.08 × 1,552,381.40 - Step 4: Simplify right side
1,688,563.16x = 3,617,932,091,207.11 - Step 5: Solve for x
x = 3,617,932,091,207.11/1,688,563.16 - Step 6: Final answer
x = 2,142,609.87
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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.