Finding the Fourth Proportional to 426,964,478.18, 640,321,078.98 and 193,660,217.06
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Solution
The fourth proportional to 426,964,478.18, 640,321,078.98 and 193,660,217.06 is: 290,433,339.26
Step by Step Solution
- Step 1: Write the proportion equation
426,964,478.18 : 640,321,078.98 = 193,660,217.06 : x - Step 2: Convert to fraction form
426,964,478.18/640,321,078.98 = 193,660,217.06/x - Step 3: Cross multiply
426,964,478.18x = 640,321,078.98 × 193,660,217.06 - Step 4: Simplify right side
426,964,478.18x = 124,004,719,143,360,208 - Step 5: Solve for x
x = 124,004,719,143,360,208/426,964,478.18 - Step 6: Final answer
x = 290,433,339.26
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.