Finding the Fourth Proportional to 663,553,631.20, 995,330,446.80 and 618,203,999.20
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Solution
The fourth proportional to 663,553,631.20, 995,330,446.80 and 618,203,999.20 is: 927,305,998.80
Step by Step Solution
- Step 1: Write the proportion equation
663,553,631.20 : 995,330,446.80 = 618,203,999.20 : x - Step 2: Convert to fraction form
663,553,631.20/995,330,446.80 = 618,203,999.20/x - Step 3: Cross multiply
663,553,631.20x = 995,330,446.80 × 618,203,999.20 - Step 4: Simplify right side
663,553,631.20x = 615,317,262,737,282,816 - Step 5: Solve for x
x = 615,317,262,737,282,816/663,553,631.20 - Step 6: Final answer
x = 927,305,998.80
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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.