Finding the Fourth Proportional to 939,631.84, 1,296,692.76 and 509,911.96
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Solution
The fourth proportional to 939,631.84, 1,296,692.76 and 509,911.96 is: 703,678.95
Step by Step Solution
- Step 1: Write the proportion equation
939,631.84 : 1,296,692.76 = 509,911.96 : x - Step 2: Convert to fraction form
939,631.84/1,296,692.76 = 509,911.96/x - Step 3: Cross multiply
939,631.84x = 1,296,692.76 × 509,911.96 - Step 4: Simplify right side
939,631.84x = 661,199,146,769.41 - Step 5: Solve for x
x = 661,199,146,769.41/939,631.84 - Step 6: Final answer
x = 703,678.95
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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.