Finding the Fourth Proportional to 7,142,410.20, 9,854,992.64 and 4,242,778.68
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Solution
The fourth proportional to 7,142,410.20, 9,854,992.64 and 4,242,778.68 is: 5,854,123.68
Step by Step Solution
- Step 1: Write the proportion equation
7,142,410.20 : 9,854,992.64 = 4,242,778.68 : x - Step 2: Convert to fraction form
7,142,410.20/9,854,992.64 = 4,242,778.68/x - Step 3: Cross multiply
7,142,410.20x = 9,854,992.64 × 4,242,778.68 - Step 4: Simplify right side
7,142,410.20x = 41,812,552,664,548.91 - Step 5: Solve for x
x = 41,812,552,664,548.91/7,142,410.20 - Step 6: Final answer
x = 5,854,123.68
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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.