Finding the Fourth Proportional to 8,713,079.70, 13,069,619.55 and 5,120,567.70
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Solution
The fourth proportional to 8,713,079.70, 13,069,619.55 and 5,120,567.70 is: 7,680,851.55
Step by Step Solution
- Step 1: Write the proportion equation
8,713,079.70 : 13,069,619.55 = 5,120,567.70 : x - Step 2: Convert to fraction form
8,713,079.70/13,069,619.55 = 5,120,567.70/x - Step 3: Cross multiply
8,713,079.70x = 13,069,619.55 × 5,120,567.70 - Step 4: Simplify right side
8,713,079.70x = 66,923,871,719,018.54 - Step 5: Solve for x
x = 66,923,871,719,018.54/8,713,079.70 - Step 6: Final answer
x = 7,680,851.55
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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.