Finding the Fourth Proportional to 1,247,380,784,518.70, 1,867,848,767,434.70 and 860,899,473,997.20
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Solution
The fourth proportional to 1,247,380,784,518.70, 1,867,848,767,434.70 and 860,899,473,997.20 is: 1,289,125,214,487.98
Step by Step Solution
- Step 1: Write the proportion equation
1,247,380,784,518.70 : 1,867,848,767,434.70 = 860,899,473,997.20 : x - Step 2: Convert to fraction form
1,247,380,784,518.70/1,867,848,767,434.70 = 860,899,473,997.20/x - Step 3: Cross multiply
1,247,380,784,518.70x = 1,867,848,767,434.70 × 860,899,473,997.20 - Step 4: Simplify right side
1,247,380,784,518.70x = 1,608,030,021,390,851,435,921,408 - Step 5: Solve for x
x = 1,608,030,021,390,851,435,921,408/1,247,380,784,518.70 - Step 6: Final answer
x = 1,289,125,214,487.98
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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.