Finding the Fourth Proportional to 7,778,913.67, 11,668,276.63 and 2,021,137.81
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Solution
The fourth proportional to 7,778,913.67, 11,668,276.63 and 2,021,137.81 is: 3,031,682.32
Step by Step Solution
- Step 1: Write the proportion equation
7,778,913.67 : 11,668,276.63 = 2,021,137.81 : x - Step 2: Convert to fraction form
7,778,913.67/11,668,276.63 = 2,021,137.81/x - Step 3: Cross multiply
7,778,913.67x = 11,668,276.63 × 2,021,137.81 - Step 4: Simplify right side
7,778,913.67x = 23,583,195,074,432.38 - Step 5: Solve for x
x = 23,583,195,074,432.38/7,778,913.67 - Step 6: Final answer
x = 3,031,682.32
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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.