Finding the Fourth Proportional to 738,289,808.10, 1,107,434,712.15 and 618,253,251.30
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Solution
The fourth proportional to 738,289,808.10, 1,107,434,712.15 and 618,253,251.30 is: 927,379,876.95
Step by Step Solution
- Step 1: Write the proportion equation
738,289,808.10 : 1,107,434,712.15 = 618,253,251.30 : x - Step 2: Convert to fraction form
738,289,808.10/1,107,434,712.15 = 618,253,251.30/x - Step 3: Cross multiply
738,289,808.10x = 1,107,434,712.15 × 618,253,251.30 - Step 4: Simplify right side
738,289,808.10x = 684,675,111,389,217,152 - Step 5: Solve for x
x = 684,675,111,389,217,152/738,289,808.10 - Step 6: Final answer
x = 927,379,876.95
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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.