Finding the Fourth Proportional to 7,128,113.80, 10,692,170.70 and 5,947,133.80
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Solution
The fourth proportional to 7,128,113.80, 10,692,170.70 and 5,947,133.80 is: 8,920,700.70
Step by Step Solution
- Step 1: Write the proportion equation
7,128,113.80 : 10,692,170.70 = 5,947,133.80 : x - Step 2: Convert to fraction form
7,128,113.80/10,692,170.70 = 5,947,133.80/x - Step 3: Cross multiply
7,128,113.80x = 10,692,170.70 × 5,947,133.80 - Step 4: Simplify right side
7,128,113.80x = 63,587,769,765,339.66 - Step 5: Solve for x
x = 63,587,769,765,339.66/7,128,113.80 - Step 6: Final answer
x = 8,920,700.70
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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.