Finding the Fourth Proportional to 7,768,668.86, 10,721,729.59 and 4,461,998.67
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Solution
The fourth proportional to 7,768,668.86, 10,721,729.59 and 4,461,998.67 is: 6,158,113.32
Step by Step Solution
- Step 1: Write the proportion equation
7,768,668.86 : 10,721,729.59 = 4,461,998.67 : x - Step 2: Convert to fraction form
7,768,668.86/10,721,729.59 = 4,461,998.67/x - Step 3: Cross multiply
7,768,668.86x = 10,721,729.59 × 4,461,998.67 - Step 4: Simplify right side
7,768,668.86x = 47,840,343,175,173.98 - Step 5: Solve for x
x = 47,840,343,175,173.98/7,768,668.86 - Step 6: Final answer
x = 6,158,113.32
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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.