Finding the Fourth Proportional to 553,212.99, 763,370.73 and 311,489.35
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Solution
The fourth proportional to 553,212.99, 763,370.73 and 311,489.35 is: 429,819.72
Step by Step Solution
- Step 1: Write the proportion equation
553,212.99 : 763,370.73 = 311,489.35 : x - Step 2: Convert to fraction form
553,212.99/763,370.73 = 311,489.35/x - Step 3: Cross multiply
553,212.99x = 763,370.73 × 311,489.35 - Step 4: Simplify right side
553,212.99x = 237,781,850,588.30 - Step 5: Solve for x
x = 237,781,850,588.30/553,212.99 - Step 6: Final answer
x = 429,819.72
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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.