Finding the Fourth Proportional to 838,471,553.20, 1,257,707,329.80 and 838,471,553.20
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Solution
The fourth proportional to 838,471,553.20, 1,257,707,329.80 and 838,471,553.20 is: 1,257,707,329.80
Step by Step Solution
- Step 1: Write the proportion equation
838,471,553.20 : 1,257,707,329.80 = 838,471,553.20 : x - Step 2: Convert to fraction form
838,471,553.20/1,257,707,329.80 = 838,471,553.20/x - Step 3: Cross multiply
838,471,553.20x = 1,257,707,329.80 × 838,471,553.20 - Step 4: Simplify right side
838,471,553.20x = 1,054,551,818,288,430,720 - Step 5: Solve for x
x = 1,054,551,818,288,430,720/838,471,553.20 - Step 6: Final answer
x = 1,257,707,329.80
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Double scale
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Similar ratio
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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.