Finding the Fourth Proportional to 1,312,719.08, 1,969,078.41 and 315,447.08
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Solution
The fourth proportional to 1,312,719.08, 1,969,078.41 and 315,447.08 is: 473,170.56
Step by Step Solution
- Step 1: Write the proportion equation
1,312,719.08 : 1,969,078.41 = 315,447.08 : x - Step 2: Convert to fraction form
1,312,719.08/1,969,078.41 = 315,447.08/x - Step 3: Cross multiply
1,312,719.08x = 1,969,078.41 × 315,447.08 - Step 4: Simplify right side
1,312,719.08x = 621,140,024,880.15 - Step 5: Solve for x
x = 621,140,024,880.15/1,312,719.08 - Step 6: Final answer
x = 473,170.56
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1.5x scale
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.