Finding the Fourth Proportional to 638,998.55, 881,817.93 and 352,518.63
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Solution
The fourth proportional to 638,998.55, 881,817.93 and 352,518.63 is: 486,475.68
Step by Step Solution
- Step 1: Write the proportion equation
638,998.55 : 881,817.93 = 352,518.63 : x - Step 2: Convert to fraction form
638,998.55/881,817.93 = 352,518.63/x - Step 3: Cross multiply
638,998.55x = 881,817.93 × 352,518.63 - Step 4: Simplify right side
638,998.55x = 310,857,248,593.04 - Step 5: Solve for x
x = 310,857,248,593.04/638,998.55 - Step 6: Final answer
x = 486,475.68
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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.