Finding the Fourth Proportional to 7,878,562.14, 10,872,415.74 and 4,256,890.14
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Solution
The fourth proportional to 7,878,562.14, 10,872,415.74 and 4,256,890.14 is: 5,874,508.39
Step by Step Solution
- Step 1: Write the proportion equation
7,878,562.14 : 10,872,415.74 = 4,256,890.14 : x - Step 2: Convert to fraction form
7,878,562.14/10,872,415.74 = 4,256,890.14/x - Step 3: Cross multiply
7,878,562.14x = 10,872,415.74 × 4,256,890.14 - Step 4: Simplify right side
7,878,562.14x = 46,282,679,361,586.80 - Step 5: Solve for x
x = 46,282,679,361,586.80/7,878,562.14 - Step 6: Final answer
x = 5,874,508.39
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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.