Finding the Fourth Proportional to 728,136,215.20, 1,092,204,322.80 and 243,462,023.20
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Solution
The fourth proportional to 728,136,215.20, 1,092,204,322.80 and 243,462,023.20 is: 365,193,034.80
Step by Step Solution
- Step 1: Write the proportion equation
728,136,215.20 : 1,092,204,322.80 = 243,462,023.20 : x - Step 2: Convert to fraction form
728,136,215.20/1,092,204,322.80 = 243,462,023.20/x - Step 3: Cross multiply
728,136,215.20x = 1,092,204,322.80 × 243,462,023.20 - Step 4: Simplify right side
728,136,215.20x = 265,910,274,176,673,856 - Step 5: Solve for x
x = 265,910,274,176,673,856/728,136,215.20 - Step 6: Final answer
x = 365,193,034.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.