Finding the Fourth Proportional to 645,122,309.70, 967,683,464.55 and 214,300,805.70
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Solution
The fourth proportional to 645,122,309.70, 967,683,464.55 and 214,300,805.70 is: 321,451,208.55
Step by Step Solution
- Step 1: Write the proportion equation
645,122,309.70 : 967,683,464.55 = 214,300,805.70 : x - Step 2: Convert to fraction form
645,122,309.70/967,683,464.55 = 214,300,805.70/x - Step 3: Cross multiply
645,122,309.70x = 967,683,464.55 × 214,300,805.70 - Step 4: Simplify right side
645,122,309.70x = 207,375,346,115,632,352 - Step 5: Solve for x
x = 207,375,346,115,632,352/645,122,309.70 - Step 6: Final answer
x = 321,451,208.55
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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.