Finding the Fourth Proportional to 485,516,964.80, 728,275,447.20 and 429,396,795.20
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Solution
The fourth proportional to 485,516,964.80, 728,275,447.20 and 429,396,795.20 is: 644,095,192.80
Step by Step Solution
- Step 1: Write the proportion equation
485,516,964.80 : 728,275,447.20 = 429,396,795.20 : x - Step 2: Convert to fraction form
485,516,964.80/728,275,447.20 = 429,396,795.20/x - Step 3: Cross multiply
485,516,964.80x = 728,275,447.20 × 429,396,795.20 - Step 4: Simplify right side
485,516,964.80x = 312,719,143,050,526,848 - Step 5: Solve for x
x = 312,719,143,050,526,848/485,516,964.80 - Step 6: Final answer
x = 644,095,192.80
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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.