Finding the Fourth Proportional to 817,753.50, 1,128,378.72 and 490,997.49
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Solution
The fourth proportional to 817,753.50, 1,128,378.72 and 490,997.49 is: 677,503.82
Step by Step Solution
- Step 1: Write the proportion equation
817,753.50 : 1,128,378.72 = 490,997.49 : x - Step 2: Convert to fraction form
817,753.50/1,128,378.72 = 490,997.49/x - Step 3: Cross multiply
817,753.50x = 1,128,378.72 × 490,997.49 - Step 4: Simplify right side
817,753.50x = 554,031,119,289.41 - Step 5: Solve for x
x = 554,031,119,289.41/817,753.50 - Step 6: Final answer
x = 677,503.82
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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.