Finding the Fourth Proportional to 3,931,290.78, 5,424,283.68 and 2,211,783.90
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Solution
The fourth proportional to 3,931,290.78, 5,424,283.68 and 2,211,783.90 is: 3,051,756.79
Step by Step Solution
- Step 1: Write the proportion equation
3,931,290.78 : 5,424,283.68 = 2,211,783.90 : x - Step 2: Convert to fraction form
3,931,290.78/5,424,283.68 = 2,211,783.90/x - Step 3: Cross multiply
3,931,290.78x = 5,424,283.68 × 2,211,783.90 - Step 4: Simplify right side
3,931,290.78x = 11,997,343,312,456.75 - Step 5: Solve for x
x = 11,997,343,312,456.75/3,931,290.78 - Step 6: Final answer
x = 3,051,756.79
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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.