Finding the Fourth Proportional to 7,210,685.94, 9,957,491.64 and 4,636,838.58
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Solution
The fourth proportional to 7,210,685.94, 9,957,491.64 and 4,636,838.58 is: 6,403,174.65
Step by Step Solution
- Step 1: Write the proportion equation
7,210,685.94 : 9,957,491.64 = 4,636,838.58 : x - Step 2: Convert to fraction form
7,210,685.94/9,957,491.64 = 4,636,838.58/x - Step 3: Cross multiply
7,210,685.94x = 9,957,491.64 × 4,636,838.58 - Step 4: Simplify right side
7,210,685.94x = 46,171,281,396,379.48 - Step 5: Solve for x
x = 46,171,281,396,379.48/7,210,685.94 - Step 6: Final answer
x = 6,403,174.65
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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.