Finding the Fourth Proportional to 747,339,990.70, 1,121,009,986.05 and 743,035,318.60
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Solution
The fourth proportional to 747,339,990.70, 1,121,009,986.05 and 743,035,318.60 is: 1,114,552,977.90
Step by Step Solution
- Step 1: Write the proportion equation
747,339,990.70 : 1,121,009,986.05 = 743,035,318.60 : x - Step 2: Convert to fraction form
747,339,990.70/1,121,009,986.05 = 743,035,318.60/x - Step 3: Cross multiply
747,339,990.70x = 1,121,009,986.05 × 743,035,318.60 - Step 4: Simplify right side
747,339,990.70x = 832,950,012,138,443,264 - Step 5: Solve for x
x = 832,950,012,138,443,264/747,339,990.70 - Step 6: Final answer
x = 1,114,552,977.90
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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.