Finding the Fourth Proportional to 6,458,507.72, 8,921,805.91 and 6,118,385.48
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Solution
The fourth proportional to 6,458,507.72, 8,921,805.91 and 6,118,385.48 is: 8,451,959.82
Step by Step Solution
- Step 1: Write the proportion equation
6,458,507.72 : 8,921,805.91 = 6,118,385.48 : x - Step 2: Convert to fraction form
6,458,507.72/8,921,805.91 = 6,118,385.48/x - Step 3: Cross multiply
6,458,507.72x = 8,921,805.91 × 6,118,385.48 - Step 4: Simplify right side
6,458,507.72x = 54,587,047,675,217.20 - Step 5: Solve for x
x = 54,587,047,675,217.20/6,458,507.72 - Step 6: Final answer
x = 8,451,959.82
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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.