Finding the Fourth Proportional to 498,949.18, 688,354.41 and 307,630.42
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Solution
The fourth proportional to 498,949.18, 688,354.41 and 307,630.42 is: 424,409.47
Step by Step Solution
- Step 1: Write the proportion equation
498,949.18 : 688,354.41 = 307,630.42 : x - Step 2: Convert to fraction form
498,949.18/688,354.41 = 307,630.42/x - Step 3: Cross multiply
498,949.18x = 688,354.41 × 307,630.42 - Step 4: Simplify right side
498,949.18x = 211,758,756,257.15 - Step 5: Solve for x
x = 211,758,756,257.15/498,949.18 - Step 6: Final answer
x = 424,409.47
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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.