Finding the Fourth Proportional to 7,320,223.80, 10,980,335.70 and 5,430,655.80
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Solution
The fourth proportional to 7,320,223.80, 10,980,335.70 and 5,430,655.80 is: 8,145,983.70
Step by Step Solution
- Step 1: Write the proportion equation
7,320,223.80 : 10,980,335.70 = 5,430,655.80 : x - Step 2: Convert to fraction form
7,320,223.80/10,980,335.70 = 5,430,655.80/x - Step 3: Cross multiply
7,320,223.80x = 10,980,335.70 × 5,430,655.80 - Step 4: Simplify right side
7,320,223.80x = 59,630,423,755,152.05 - Step 5: Solve for x
x = 59,630,423,755,152.05/7,320,223.80 - Step 6: Final answer
x = 8,145,983.70
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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.