Finding the Fourth Proportional to 553,230.34, 763,450.58 and 311,536.78
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Solution
The fourth proportional to 553,230.34, 763,450.58 and 311,536.78 is: 429,916.65
Step by Step Solution
- Step 1: Write the proportion equation
553,230.34 : 763,450.58 = 311,536.78 : x - Step 2: Convert to fraction form
553,230.34/763,450.58 = 311,536.78/x - Step 3: Cross multiply
553,230.34x = 763,450.58 × 311,536.78 - Step 4: Simplify right side
553,230.34x = 237,842,935,382.33 - Step 5: Solve for x
x = 237,842,935,382.33/553,230.34 - Step 6: Final answer
x = 429,916.65
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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.