Finding the Fourth Proportional to 623,037,450.88, 860,056,419.55 and 388,204,135.71
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Solution
The fourth proportional to 623,037,450.88, 860,056,419.55 and 388,204,135.71 is: 535,886,660.65
Step by Step Solution
- Step 1: Write the proportion equation
623,037,450.88 : 860,056,419.55 = 388,204,135.71 : x - Step 2: Convert to fraction form
623,037,450.88/860,056,419.55 = 388,204,135.71/x - Step 3: Cross multiply
623,037,450.88x = 860,056,419.55 × 388,204,135.71 - Step 4: Simplify right side
623,037,450.88x = 333,877,459,012,274,368 - Step 5: Solve for x
x = 333,877,459,012,274,368/623,037,450.88 - Step 6: Final answer
x = 535,886,660.65
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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.