Finding the Fourth Proportional to 8,276,687,994.80, 12,415,031,992.20 and 7,378,765,281.20
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Solution
The fourth proportional to 8,276,687,994.80, 12,415,031,992.20 and 7,378,765,281.20 is: 11,068,147,921.80
Step by Step Solution
- Step 1: Write the proportion equation
8,276,687,994.80 : 12,415,031,992.20 = 7,378,765,281.20 : x - Step 2: Convert to fraction form
8,276,687,994.80/12,415,031,992.20 = 7,378,765,281.20/x - Step 3: Cross multiply
8,276,687,994.80x = 12,415,031,992.20 × 7,378,765,281.20 - Step 4: Simplify right side
8,276,687,994.80x = 91,607,607,029,032,632,320 - Step 5: Solve for x
x = 91,607,607,029,032,632,320/8,276,687,994.80 - Step 6: Final answer
x = 11,068,147,921.80
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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.