Finding the Fourth Proportional to 1,247,380,784,512.60, 1,867,848,767,425.40 and 860,899,473,990.95
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Solution
The fourth proportional to 1,247,380,784,512.60, 1,867,848,767,425.40 and 860,899,473,990.95 is: 1,289,125,214,478.50
Step by Step Solution
- Step 1: Write the proportion equation
1,247,380,784,512.60 : 1,867,848,767,425.40 = 860,899,473,990.95 : x - Step 2: Convert to fraction form
1,247,380,784,512.60/1,867,848,767,425.40 = 860,899,473,990.95/x - Step 3: Cross multiply
1,247,380,784,512.60x = 1,867,848,767,425.40 × 860,899,473,990.95 - Step 4: Simplify right side
1,247,380,784,512.60x = 1,608,030,021,371,171,090,464,768 - Step 5: Solve for x
x = 1,608,030,021,371,171,090,464,768/1,247,380,784,512.60 - Step 6: Final answer
x = 1,289,125,214,478.50
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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.