Finding the Fourth Proportional to 1,286,719.10, 1,775,885.32 and 713,943.80
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Solution
The fourth proportional to 1,286,719.10, 1,775,885.32 and 713,943.80 is: 985,360.61
Step by Step Solution
- Step 1: Write the proportion equation
1,286,719.10 : 1,775,885.32 = 713,943.80 : x - Step 2: Convert to fraction form
1,286,719.10/1,775,885.32 = 713,943.80/x - Step 3: Cross multiply
1,286,719.10x = 1,775,885.32 × 713,943.80 - Step 4: Simplify right side
1,286,719.10x = 1,267,882,313,725.02 - Step 5: Solve for x
x = 1,267,882,313,725.02/1,286,719.10 - Step 6: Final answer
x = 985,360.61
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1.5x scale
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.