Finding the Fourth Proportional to 2,620,404,908.70, 3,930,607,363.05 and 1,242,909,836.70
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Solution
The fourth proportional to 2,620,404,908.70, 3,930,607,363.05 and 1,242,909,836.70 is: 1,864,364,755.05
Step by Step Solution
- Step 1: Write the proportion equation
2,620,404,908.70 : 3,930,607,363.05 = 1,242,909,836.70 : x - Step 2: Convert to fraction form
2,620,404,908.70/3,930,607,363.05 = 1,242,909,836.70/x - Step 3: Cross multiply
2,620,404,908.70x = 3,930,607,363.05 × 1,242,909,836.70 - Step 4: Simplify right side
2,620,404,908.70x = 4,885,390,555,740,293,120 - Step 5: Solve for x
x = 4,885,390,555,740,293,120/2,620,404,908.70 - Step 6: Final answer
x = 1,864,364,755.05
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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.