Finding the Fourth Proportional to 747,923,947.20, 1,121,885,920.80 and 472,424,932.80
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Solution
The fourth proportional to 747,923,947.20, 1,121,885,920.80 and 472,424,932.80 is: 708,637,399.20
Step by Step Solution
- Step 1: Write the proportion equation
747,923,947.20 : 1,121,885,920.80 = 472,424,932.80 : x - Step 2: Convert to fraction form
747,923,947.20/1,121,885,920.80 = 472,424,932.80/x - Step 3: Cross multiply
747,923,947.20x = 1,121,885,920.80 × 472,424,932.80 - Step 4: Simplify right side
747,923,947.20x = 530,006,880,743,206,144 - Step 5: Solve for x
x = 530,006,880,743,206,144/747,923,947.20 - Step 6: Final answer
x = 708,637,399.20
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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.