Finding the Fourth Proportional to 7,163,499.76, 9,885,536.88 and 3,900,277.12
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Solution
The fourth proportional to 7,163,499.76, 9,885,536.88 and 3,900,277.12 is: 5,382,331.91
Step by Step Solution
- Step 1: Write the proportion equation
7,163,499.76 : 9,885,536.88 = 3,900,277.12 : x - Step 2: Convert to fraction form
7,163,499.76/9,885,536.88 = 3,900,277.12/x - Step 3: Cross multiply
7,163,499.76x = 9,885,536.88 × 3,900,277.12 - Step 4: Simplify right side
7,163,499.76x = 38,556,333,311,980.19 - Step 5: Solve for x
x = 38,556,333,311,980.19/7,163,499.76 - Step 6: Final answer
x = 5,382,331.91
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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.