Finding the Fourth Proportional to 1,118,371,169.95, 1,543,353,915.14 and 623,323,249.63
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Solution
The fourth proportional to 1,118,371,169.95, 1,543,353,915.14 and 623,323,249.63 is: 860,187,032.32
Step by Step Solution
- Step 1: Write the proportion equation
1,118,371,169.95 : 1,543,353,915.14 = 623,323,249.63 : x - Step 2: Convert to fraction form
1,118,371,169.95/1,543,353,915.14 = 623,323,249.63/x - Step 3: Cross multiply
1,118,371,169.95x = 1,543,353,915.14 × 623,323,249.63 - Step 4: Simplify right side
1,118,371,169.95x = 962,008,377,709,641,728 - Step 5: Solve for x
x = 962,008,377,709,641,728/1,118,371,169.95 - Step 6: Final answer
x = 860,187,032.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.