Finding the Fourth Proportional to 603,613,879.80, 905,420,819.70 and 517,520,437.80
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Solution
The fourth proportional to 603,613,879.80, 905,420,819.70 and 517,520,437.80 is: 776,280,656.70
Step by Step Solution
- Step 1: Write the proportion equation
603,613,879.80 : 905,420,819.70 = 517,520,437.80 : x - Step 2: Convert to fraction form
603,613,879.80/905,420,819.70 = 517,520,437.80/x - Step 3: Cross multiply
603,613,879.80x = 905,420,819.70 × 517,520,437.80 - Step 4: Simplify right side
603,613,879.80x = 468,573,779,004,378,880 - Step 5: Solve for x
x = 468,573,779,004,378,880/603,613,879.80 - Step 6: Final answer
x = 776,280,656.70
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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.