Finding the Fourth Proportional to 6,430,602.55, 8,861,998.68 and 6,312,423.75
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Solution
The fourth proportional to 6,430,602.55, 8,861,998.68 and 6,312,423.75 is: 8,699,136.75
Step by Step Solution
- Step 1: Write the proportion equation
6,430,602.55 : 8,861,998.68 = 6,312,423.75 : x - Step 2: Convert to fraction form
6,430,602.55/8,861,998.68 = 6,312,423.75/x - Step 3: Cross multiply
6,430,602.55x = 8,861,998.68 × 6,312,423.75 - Step 4: Simplify right side
6,430,602.55x = 55,940,690,940,100.65 - Step 5: Solve for x
x = 55,940,690,940,100.65/6,430,602.55 - Step 6: Final answer
x = 8,699,136.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.