Finding the Fourth Proportional to 641,620,278.86, 885,413,075.36 and 363,155,823.68
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Solution
The fourth proportional to 641,620,278.86, 885,413,075.36 and 363,155,823.68 is: 501,142,069.96
Step by Step Solution
- Step 1: Write the proportion equation
641,620,278.86 : 885,413,075.36 = 363,155,823.68 : x - Step 2: Convert to fraction form
641,620,278.86/885,413,075.36 = 363,155,823.68/x - Step 3: Cross multiply
641,620,278.86x = 885,413,075.36 × 363,155,823.68 - Step 4: Simplify right side
641,620,278.86x = 321,542,914,673,159,872 - Step 5: Solve for x
x = 321,542,914,673,159,872/641,620,278.86 - Step 6: Final answer
x = 501,142,069.96
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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.